Sites

Full list of sites on the map: the power, land, and water figures behind the regional AI and cloud build-out. Each row links to more detail, including where each figure comes from.

Stated size is how large this site claims to be, in megawatts: the biggest size stated for that site if published, otherwise the grid connection applied for, otherwise the first stage only, otherwise the IT-equipment load. It is a size on paper for that scheme, not day-to-day electricity use, and not a regional total. Equal figures (two schemes publishing the same megawatts) are joint maxima: neither outranks the other. Site area is land take in acres and what kind of land it is.

				Water		Land use
Manor Farm data centre (Poyle Road)	Manor Farm Propco / Tritax Big Box affiliate	approved	72 MW · biggest size stated for this site	Not disclosed	20.2 acres	farmland	2026-07-25
Yondr London campus (Slough)	Yondr Group	operating	100 MW · biggest size stated for this site	Not disclosed	Unknown	ex-industrial / brownfield	2026-10-05
Pure DC / SEGRO Premier Park (Park Royal)	Pure Data Centres / SEGRO JV	proposed (reported consented)	56 MW · biggest size stated for this site	Not disclosed	10 acres	active industrial	2026-07-20
Ada Infrastructure Docklands campus	Ada Infrastructure (GLP Capital Partners)	proposed (reported under construction)	210 MW · biggest size stated for this site	Zero claimed	Unknown	ex-industrial / brownfield	2026-07-20
Bidder Street data centre (Canning Town)	Undisclosed (application on former EMR site)	in planning	Not disclosed	Not disclosed	Unknown	ex-industrial / brownfield	2026-07-20
Truman Brewery data centre (Grey Eagle Street)	Truman Estates / Grow Places (reported)	approved	4 MW · biggest size stated for this site	Not disclosed	Unknown	ex-industrial / brownfield	2026-08-07
VIRTUS LONDON4 (Slough)	VIRTUS Data Centres (STT GDC)	operating	27 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
CyrusOne LON1 (Slough)	CyrusOne	operating	8.7 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
NTT London 1 (Dagenham)	NTT Global Data Centers	operating	32 MW · first stage only	Not disclosed	Unknown	active industrial	2026-10-05
Global Switch London East	Global Switch	operating	45 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-25
Global Switch London North	Global Switch	operating	18 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
Vantage London II (LHR2, Park Royal)	Vantage Data Centers	operating	20 MW · biggest size stated for this site	Zero claimed	Unknown	active industrial	2026-07-20
Digital Realty Slough campus	Digital Realty	operating	Not disclosed	Not disclosed	Unknown	active industrial	2026-07-20
Telehouse North Two (Docklands)	Telehouse (KDDI)	operating	16 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-25
VIRTUS LONDON5 (Stockley Park)	VIRTUS Data Centres (STT GDC)	operating	24 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
Vantage London I (LHR1, PowerGate)	Vantage Data Centers	operating	55 MW · biggest size stated for this site	Zero claimed	5 acres	active industrial	2026-07-20
Iron Mountain LON-1 (Slough)	Iron Mountain Data Centers	operating	8.7 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
Iron Mountain LON-2 (Slough)	Iron Mountain Data Centers	operating	27 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
Iron Mountain LON-3 (Slough)	Iron Mountain Data Centers	proposed (reported under construction)	25 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
VIRTUS LONDON3 (Slough)	VIRTUS Data Centres (STT GDC)	operating	7.2 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
VIRTUS LONDON9 (Slough)	VIRTUS Data Centres (STT GDC)	operating	24 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
VIRTUS LONDON10 (Slough)	VIRTUS Data Centres (STT GDC)	operating	6.6 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
VIRTUS LONDON11 (Slough)	VIRTUS Data Centres (STT GDC)	operating	13 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
VIRTUS LONDON12 (Slough)	VIRTUS Data Centres (STT GDC)	operating	21 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
VIRTUS LONDON19 (Slough)	VIRTUS Data Centres (STT GDC)	operating	32.5 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
VIRTUS LONDON2 (Hayes)	VIRTUS Data Centres (STT GDC)	operating	11.4 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
VIRTUS LONDON1 (Enfield)	VIRTUS Data Centres (STT GDC)	operating	4.2 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
VIRTUS LONDON6 (Stockley Park)	VIRTUS Data Centres (STT GDC)	operating	16 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
VIRTUS LONDON7 (Stockley Park)	VIRTUS Data Centres (STT GDC)	operating	28 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
VIRTUS LONDON8 (Stockley Park)	VIRTUS Data Centres (STT GDC)	operating	18 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
NTT Slough 2 (SL2)	NTT Global Data Centers	operating	1.8 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
Equinix LD8 (Harbour Exchange)	Equinix	operating	Not disclosed	Not disclosed	Unknown	active industrial	2026-07-20
Equinix LD9 (Powergate)	Equinix	operating	Not disclosed	Not disclosed	Unknown	active industrial	2026-07-20
Telehouse West (Docklands)	Telehouse (KDDI)	operating	Not disclosed	Not disclosed	Unknown	active industrial	2026-10-05
Telehouse West Two (Docklands)	Telehouse (KDDI)	proposed (reported under construction)	33 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
Telehouse South (Blackwall Yard)	Telehouse (KDDI)	operating	18 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-10-05
Serverfarm LON1 (Feltham)	Serverfarm	operating	11.4 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
Digital Realty Docklands (Harbour Exchange)	Digital Realty	operating	Not disclosed	Not disclosed	Unknown	active industrial	2026-07-20
Abbots Langley data centre (Bedmond Road)	Greystoke Land	approved	96 MW · biggest size stated for this site	Not disclosed	76.6 acres	farmland	2026-10-05
NTT Hemel Hempstead 1 (HH1)	NTT Global Data Centers	operating	2 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
NTT Hemel Hempstead 2 (HH2)	NTT Global Data Centers	operating	6.2 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
NTT Hemel Hempstead 3 (HH3)	NTT Global Data Centers	operating	20 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
NTT Hemel Hempstead 4 (HH4)	NTT Global Data Centers	operating	12 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
Ark Elstree campus (former Mercure Hotel)	Ark Data Centres	proposed	200 MW · biggest size stated for this site	Not disclosed	Unknown	ex-industrial / brownfield	2026-07-20
Pulsant Croydon LN-1	Pulsant	operating	1.4 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
Thurrock data centre (Arena Essex)	Global Infrastructure UK / Google (reported end user)	in planning	Not disclosed	Not disclosed	128 acres	ex-industrial / brownfield	2026-07-20
Digital Realty Oliver's Yard (LHR18)	Digital Realty	operating	2.3 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
CorScale Iver (Court Lane)	CorScale / Affinius Capital	approved	103 MW · biggest size stated for this site	Not disclosed	14 acres	ex-industrial / brownfield	2026-10-05
CyrusOne LON6 (Iver Heath)	CyrusOne	proposed (reported consented)	90 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
SEGRO Iver (Thorney Business Park)	SEGRO	proposed (reported consented)	Not disclosed	Not disclosed	19.5 acres	ex-industrial / brownfield	2026-07-20
Digital Realty LGW15 (Crawley Unit 1)	Digital Realty	operating	18 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
Digital Realty LGW16 (Crawley Unit 2)	Digital Realty	operating	16 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-25
Equinix LD4 (Slough)	Equinix	operating	16 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
Equinix LD5 (Slough)	Equinix	operating	25 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
Equinix LD6 (Slough)	Equinix	operating	16 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
GTR GB One (Slough)	Global Technical Realty	operating	40.5 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
Digital Realty LON1 (Hanbury Street)	Digital Realty	operating	8 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-25
CyrusOne LON2 (West Drayton)	CyrusOne	operating	13.9 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
CyrusOne LON3 (Slough)	CyrusOne	operating	9 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
CyrusOne LON4 (Slough)	CyrusOne	operating	18 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
CyrusOne LON5 (Slough)	CyrusOne	operating	18 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
VIRTUS LONDON14 (Stockley Park)	VIRTUS Data Centres (STT GDC)	operating	22 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
Equinix LD7 (Slough)	Equinix	operating	Not disclosed	Not disclosed	Unknown	active industrial	2026-07-20
Equinix LD10 (Slough)	Equinix	operating	9 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
Equinix LD13x (Slough)	Equinix (xScale / GIC JV)	operating	9 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
Telehouse East (Docklands)	Telehouse (KDDI)	operating	Not disclosed	Not disclosed	Unknown	active industrial	2026-07-20
NTT Slough 3 (SL3)	NTT Global Data Centers	operating	2.7 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
Kao Data KLON-01 (Harlow)	Kao Data	operating	8.8 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
Kao Data KLON-02 (Harlow)	Kao Data	operating	8.8 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
Kao Data KLON-03 (Harlow)	Kao Data	proposed (reported under construction)	17.6 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
Kao Data KLON-04 (Harlow)	Kao Data	proposed	36 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-20
Digital Realty LGW14 (Woking)	Digital Realty	operating	Not disclosed	Not disclosed	Unknown	active industrial	2026-07-20
Google Waltham Cross data centre	Google	operating	Not disclosed	Not disclosed	33 acres	farmland	2026-07-20
Equinix Hertfordshire Campus (South Mimms)	Equinix	proposed (reported consented)	250 MW · biggest size stated for this site	Not disclosed	85 acres	farmland	2026-07-25
Digital Reef 'London Data Freeport' (East Havering)	Digital Reef	proposed	600 MW · biggest size stated for this site	Not disclosed	432 acres	farmland	2026-07-20
Colt DCS Hayes Digital Park (existing campus)	Colt Data Centre Services	operating	63 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-10-05
Colt DCS Hayes Digital Park (expansion)	Colt Data Centre Services	proposed (reported consented)	97 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-10-05
Microsoft Park Royal data centre	Microsoft (Azure)	proposed (reported under construction)	Not disclosed	Not disclosed	Unknown	active industrial	2026-10-05
Netwise London Central (Bermondsey)	Netwise Hosting	decommissioned	0.5 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-24
Global Switch London South	Global Switch	proposed (reported consented)	40 MW · biggest size stated for this site	Not disclosed	Unknown	active industrial	2026-07-25
CyrusOne LON7 / Honey Monster site (Southall)	CyrusOne (developer Apt, reported)	in planning	Not disclosed	Not disclosed	16.8 acres	ex-industrial / brownfield	2026-08-07
Equinix Wexham Road (former AkzoNobel paint factory)	Equinix	proposed (reported consented)	Not disclosed	Not disclosed	11.5 acres	ex-industrial / brownfield	2026-08-07
Pure DC Brent Cross (LON01, Building 1)	Pure Data Centres	operating	20 MW · IT equipment only	Not disclosed	Unknown	ex-industrial / brownfield	2026-10-05
Pure DC Brent Cross (LON01, Building 2)	Pure Data Centres	proposed (reported under construction)	70 MW · IT equipment only	Not disclosed	Unknown	ex-industrial / brownfield	2026-10-05
Greystoke Woodlands Park data centre (Iver)	Greystoke Land / Altrad UK	approved	Not disclosed	Not disclosed	Unknown	ex-industrial / brownfield	2026-10-05
Telehouse North (Docklands)	Telehouse (KDDI)	operating	Not disclosed	Not disclosed	Unknown	active industrial	2026-10-05
Equinix LD11x (Slough)	Equinix	operating	Not disclosed	Not disclosed	Unknown	active industrial	2026-08-09
Equinix LD14 (Slough)	Equinix	proposed (reported under construction)	30 MW · biggest size stated for this site	Not disclosed	2.20 acres	active industrial	2026-08-09

What each site discloses

Presence of a public figure only. Not a score: five separate yes/no answers, not a grade. “Energy source” means an on-record claim about where power comes from (for example renewables or heat reuse), not a verified supply mix.

Site	Stated size (MW)	Water use	Power usage effectiveness	Energy source claim	Load factor
Manor Farm data centre (Poyle Road)	Yes	No	No	No	No
Yondr London campus (Slough)	Yes	No	No	No	No
Pure DC / SEGRO Premier Park (Park Royal)	Yes	No	No	No	No
Ada Infrastructure Docklands campus	Yes	Yes	No	No	No
Bidder Street data centre (Canning Town)	No	No	No	No	No
Truman Brewery data centre (Grey Eagle Street)	Yes	No	No	No	No
VIRTUS LONDON4 (Slough)	Yes	No	No	No	No
CyrusOne LON1 (Slough)	Yes	No	No	No	No
NTT London 1 (Dagenham)	Yes	No	No	No	No
Global Switch London East	Yes	No	No	No	No
Global Switch London North	Yes	No	No	No	No
Vantage London II (LHR2, Park Royal)	Yes	Yes	No	No	No
Digital Realty Slough campus	No	No	No	No	No
Telehouse North Two (Docklands)	Yes	No	No	No	No
VIRTUS LONDON5 (Stockley Park)	Yes	No	No	No	No
Vantage London I (LHR1, PowerGate)	Yes	Yes	No	No	No
Iron Mountain LON-1 (Slough)	Yes	No	No	No	No
Iron Mountain LON-2 (Slough)	Yes	No	No	No	No
Iron Mountain LON-3 (Slough)	Yes	No	No	No	No
VIRTUS LONDON3 (Slough)	Yes	No	No	No	No
VIRTUS LONDON9 (Slough)	Yes	No	No	No	No
VIRTUS LONDON10 (Slough)	Yes	No	No	No	No
VIRTUS LONDON11 (Slough)	Yes	No	No	No	No
VIRTUS LONDON12 (Slough)	Yes	No	No	No	No
VIRTUS LONDON19 (Slough)	Yes	No	No	No	No
VIRTUS LONDON2 (Hayes)	Yes	No	No	No	No
VIRTUS LONDON1 (Enfield)	Yes	No	No	No	No
VIRTUS LONDON6 (Stockley Park)	Yes	No	No	No	No
VIRTUS LONDON7 (Stockley Park)	Yes	No	No	No	No
VIRTUS LONDON8 (Stockley Park)	Yes	No	No	No	No
NTT Slough 2 (SL2)	Yes	No	No	No	No
Equinix LD8 (Harbour Exchange)	No	No	No	No	No
Equinix LD9 (Powergate)	No	No	No	No	No
Telehouse West (Docklands)	No	No	No	No	No
Telehouse West Two (Docklands)	Yes	No	No	No	No
Telehouse South (Blackwall Yard)	Yes	No	No	No	No
Serverfarm LON1 (Feltham)	Yes	No	No	No	No
Digital Realty Docklands (Harbour Exchange)	No	No	No	No	No
Abbots Langley data centre (Bedmond Road)	Yes	No	No	No	No
NTT Hemel Hempstead 1 (HH1)	Yes	No	No	No	No
NTT Hemel Hempstead 2 (HH2)	Yes	No	No	No	No
NTT Hemel Hempstead 3 (HH3)	Yes	No	No	No	No
NTT Hemel Hempstead 4 (HH4)	Yes	No	No	No	No
Ark Elstree campus (former Mercure Hotel)	Yes	No	No	No	No
Pulsant Croydon LN-1	Yes	No	No	No	No
Thurrock data centre (Arena Essex)	No	No	No	No	No
Digital Realty Oliver's Yard (LHR18)	Yes	No	No	No	No
CorScale Iver (Court Lane)	Yes	No	No	No	No
CyrusOne LON6 (Iver Heath)	Yes	No	No	No	No
SEGRO Iver (Thorney Business Park)	No	No	No	No	No
Digital Realty LGW15 (Crawley Unit 1)	Yes	No	No	No	No
Digital Realty LGW16 (Crawley Unit 2)	Yes	No	No	No	No
Equinix LD4 (Slough)	Yes	No	No	No	No
Equinix LD5 (Slough)	Yes	No	No	No	No
Equinix LD6 (Slough)	Yes	No	No	No	No
GTR GB One (Slough)	Yes	No	No	No	No
Digital Realty LON1 (Hanbury Street)	Yes	No	No	No	No
CyrusOne LON2 (West Drayton)	Yes	No	No	No	No
CyrusOne LON3 (Slough)	Yes	No	No	No	No
CyrusOne LON4 (Slough)	Yes	No	No	No	No
CyrusOne LON5 (Slough)	Yes	No	No	No	No
VIRTUS LONDON14 (Stockley Park)	Yes	No	No	No	No
Equinix LD7 (Slough)	No	No	No	No	No
Equinix LD10 (Slough)	Yes	No	No	No	No
Equinix LD13x (Slough)	Yes	No	No	No	No
Telehouse East (Docklands)	No	No	No	No	No
NTT Slough 3 (SL3)	Yes	No	No	No	No
Kao Data KLON-01 (Harlow)	Yes	No	No	No	No
Kao Data KLON-02 (Harlow)	Yes	No	No	No	No
Kao Data KLON-03 (Harlow)	Yes	No	No	No	No
Kao Data KLON-04 (Harlow)	Yes	No	No	No	No
Digital Realty LGW14 (Woking)	No	No	No	No	No
Google Waltham Cross data centre	No	No	No	No	No
Equinix Hertfordshire Campus (South Mimms)	Yes	No	No	No	No
Digital Reef 'London Data Freeport' (East Havering)	Yes	No	No	No	No
Colt DCS Hayes Digital Park (existing campus)	Yes	No	No	No	No
Colt DCS Hayes Digital Park (expansion)	Yes	No	No	No	No
Microsoft Park Royal data centre	No	No	No	No	No
Netwise London Central (Bermondsey)	Yes	No	No	No	No
Global Switch London South	Yes	No	No	No	No
CyrusOne LON7 / Honey Monster site (Southall)	No	No	No	No	No
Equinix Wexham Road (former AkzoNobel paint factory)	No	No	No	No	No
Pure DC Brent Cross (LON01, Building 1)	Yes	No	No	No	No
Pure DC Brent Cross (LON01, Building 2)	Yes	No	No	No	No
Greystoke Woodlands Park data centre (Iver)	No	No	No	No	No
Telehouse North (Docklands)	No	No	No	No	No
Equinix LD11x (Slough)	No	No	No	No	No
Equinix LD14 (Slough)	Yes	No	No	No	No

Load factor is how much of peak capacity a site expects to use on average. No operator on this map publishes one.