Greater London
11 engineers covering this area
Counties and areas served (1)
- Greater London
School leak detection across the UK
ADI’s 23 leak detection engineers work across England, Scotland and Wales. Explore the team covering your area and the counties they serve.
23 engineers nationwide
A team serving England, Scotland and Wales, with specialist equipment for investigating hidden leaks.
The figures below show each regional team and the counties it serves. Engineers can cover more than one region, so these figures should not be added together. They are regional coverage totals, not a separate headcount for each county.
Engineers covering your area
South East
15 engineers covering this area
Counties and areas served (9)
- Berkshire
- Buckinghamshire
- East Sussex
- Hampshire
- Isle of Wight
- Kent
- Oxfordshire
- Surrey
- West Sussex
East of England
15 engineers covering this area
Counties and areas served (7)
- Bedfordshire
- Cambridgeshire
- Essex
- Hertfordshire
- Norfolk
- Northamptonshire
- Suffolk
South West
13 engineers covering this area
Counties and areas served (7)
- Bristol
- Cornwall
- Devon
- Dorset
- Gloucestershire
- Somerset
- Wiltshire
Midlands
15 engineers covering this area
Counties and areas served (12)
- Derbyshire
- Herefordshire
- Leicestershire
- Lincolnshire
- North Lincolnshire
- Nottinghamshire
- Rutland
- Shropshire
- Staffordshire
- Warwickshire
- West Midlands
- Worcestershire
North West
6 engineers covering this area
Counties and areas served (5)
- Cheshire
- Cumbria
- Greater Manchester
- Lancashire
- Merseyside
North East
2 engineers covering this area
Counties and areas served (3)
- County Durham
- Northumberland
- Tyne and Wear
Yorkshire
4 engineers covering this area
Counties and areas served (4)
- Yorkshire
- North Yorkshire
- South Yorkshire
- West Yorkshire
Wales
6 engineers covering this area
Counties and areas served (22)
- Conwy
- Denbighshire
- Flintshire
- Gwynedd
- Isle of Anglesey
- Wrexham
- Ceredigion
- Powys
- Carmarthenshire
- Neath Port Talbot
- Pembrokeshire
- Swansea
- Blaenau Gwent
- Bridgend
- Caerphilly
- Cardiff
- Merthyr Tydfil
- Monmouthshire
- Newport
- Rhondda Cynon Taf
- Torfaen
- Vale of Glamorgan
Scotland
1 engineer covering this area
Counties and areas served (28)
- East Ayrshire
- East Dunbartonshire
- East Renfrewshire
- Glasgow
- Inverclyde
- North Ayrshire
- North Lanarkshire
- Renfrewshire
- South Ayrshire
- South Lanarkshire
- West Dunbartonshire
- Clackmannanshire
- East Lothian
- Edinburgh
- Falkirk
- Fife
- Midlothian
- Stirling
- West Lothian
- Aberdeenshire
- Angus
- Dundee
- Moray
- Perth and Kinross
- Argyll and Bute
- Highland
- Dumfries and Galloway
- Scottish Borders
Source: ADI’s published engineer coverage. Checked 8 September 2026. Contact the team to discuss your school’s postcode and survey requirements.
Regional school information
South East
Six wholesalers operate across the South East, so two schools in the same trust can sit under different leakage allowance rules
London
None. Every open school in London sits in an urban classification, so every supply is a mains connection on a constrained site
East of England
The region covers its schools with just eleven local authorities, the fewest of any English region relative to its size
South West
The South West has the largest number of rural-classified schools of any English region, so long buried private supply runs are the regional norm rather than the exception
West Midlands
SCOLA, the Second Consortium of Local Authorities, operated across this region, and its light steel-framed buildings still make up a substantial part of the secondary stock
North West
One. United Utilities wholesales to the entire region, which makes it the simplest English region in which to run a trust-wide water strategy
Yorkshire and the Humber
The region is split between soft upland supplies from the Pennine catchments and hard groundwater from the Yorkshire Wolds, so failure modes differ across a single trust
East Midlands
Nottinghamshire County Council developed CLASP in 1957 specifically to build schools that could tolerate mining subsidence, and the region holds a large share of the resulting stock
North East
The smallest English region by open school count, which makes a trust-wide consumption comparison across the whole region genuinely practical
Scotland
Scotland opened its non-household water retail market in 2008, so Scottish schools have been able to choose a licensed provider for longer than schools in England
Wales
No academy trusts exist in Wales, so condition works are planned through twenty-two local authorities rather than through trust estates teams
Northern Ireland
There is no competitive non-household water market in Northern Ireland, so there is no retailer to switch to and no market-wide leakage allowance scheme of the England and Wales kind