| Halton Council EN | North West | generic | Weekly | 35d ago | 10 |
| Hammersmith and Fulham Council EN | London | generic | Weekly | Pending | 0 |
| Hampshire and isle of Wight Healthcare NHS Foundation Trust EN | South East | bravo | Weekly | Broken | 0 |
| Harborough Council EN | East Midlands | generic | Weekly | Pending | 0 |
| Haringey Council EN | London | generic | Weekly | Pending | 0 |
| Harlow Council EN | East of England | generic | Weekly | Pending | 0 |
| Harrow Council EN | London | generic | Weekly | Pending | 0 |
| Hart Council EN | South East | generic | Weekly | Pending | 0 |
| Hartlepool Council EN | North East | generic | Weekly | Pending | 0 |
| Hastings Council EN | South East | generic | Weekly | Pending | 0 |
| Havant Council EN | South East | generic | Weekly | Pending | 0 |
| Havering Council EN | London | generic | Weekly | Pending | 0 |
| Health and Safety Executive EN | North West | in-tend | Weekly | Today | 16 |
| Healthtrusteurope (Jaggaer portal) EN | East of England | bravo | Weekly | Today | 16 |
| Herefordshire Council EN | West Midlands | generic | Weekly | Pending | 0 |
| Hertfordshire County Council EN | East of England | generic | Weekly | Pending | 0 |
| Hertsmere Council EN | East of England | generic | Weekly | Pending | 0 |
| High Peak Council EN | East Midlands | generic | Weekly | Pending | 0 |
| High Speed Two (HS2) Ltd EN | — | bravo | Weekly | Broken | 0 |
| Hillingdon Council EN | London | generic | Weekly | Pending | 0 |
| Hinckley and Bosworth Council EN | East Midlands | generic | Weekly | Pending | 0 |
| Historic England EN | South West | in-tend | Weekly | Today | 99 |
| HM Land Registry EN | London | atamis | Weekly | Today | 154 |
| Homes In Somerset Limited EN | South West | in-tend | Weekly | Broken | 0 |
| Horsham Council EN | South East | in-tend | Weekly | Broken | 9 |
| Hounslow Council EN | London | generic | Weekly | Pending | 0 |
| Hull City Council EN | Yorkshire and the Humber | generic | Weekly | Pending | 0 |
| Humberside Fire & Rescue Service EN | Yorkshire and the Humber | delta | Weekly | Today | 14 |
| Huntingdonshire Council EN | East of England | in-tend | Weekly | Broken | 0 |
| Hyndburn Council EN | North West | generic | Weekly | Pending | 0 |
| Inspire Education Group EN | East of England | in-tend | Weekly | Broken | 0 |
| Intellectual Property Office EN | Wales | atamis | Weekly | Today | 7 |
| Interconnector Services (Ni) Limited EN | Northern Ireland | in-tend | Weekly | Today | 7 |
| Inverclyde Council SC | Scotland | generic | Weekly | Pending | 0 |
| Ipswich Council EN | East of England | generic | Weekly | Pending | 0 |
| Irwell Valley Housing Association Limited EN | North West | in-tend | Weekly | Today | 7 |
| Isle of Anglesey Council WL | Wales | generic | Weekly | Pending | 0 |
| Isle of Wight EN | South East | in-tend | Weekly | Broken | 0 |
| Isle of Wight Council EN | South East | generic | Weekly | Pending | 0 |
| Isles of Scilly Council EN | South West | generic | Weekly | Pending | 0 |
| Islington Council EN | London | generic | Weekly | Pending | 0 |
| Kensington and Chelsea Council EN | London | generic | Weekly | Pending | 0 |
| Kent County Council EN | South East | generic | Weekly | Pending | 0 |
| King's College London EN | London | in-tend | Weekly | Today | 21 |
| King's Lynn and West Norfolk Council EN | East of England | in-tend | Weekly | Today | 205 |
| Kingston University Higher Education Corporation EN | London | in-tend | Weekly | Today | 1 |
| Kingston upon Thames Council EN | London | generic | Weekly | Pending | 0 |
| Kirklees Council EN | Yorkshire and the Humber | generic | Weekly | Pending | 0 |
| Knowsley Council EN | North West | generic | Weekly | 35d ago | 10 |
| Lambeth Council EN | London | generic | Weekly | Pending | 0 |
| Lancashire County Council EN | North West | generic | Weekly | Pending | 0 |
| Lancaster Council EN | North West | generic | Weekly | Pending | 0 |
| Lee Valley Regional Park Authority EN | London | in-tend | Weekly | Today | 7 |
| Leicester Council EN | East Midlands | generic | Weekly | Pending | 0 |
| Leicestershire County Council EN | East Midlands | generic | Weekly | Pending | 0 |
| Lewes Council EN | South East | generic | Weekly | Pending | 0 |
| Lewisham Council EN | London | generic | Weekly | Pending | 0 |
| Lgps Central Limited EN | West Midlands | in-tend | Weekly | Today | 9 |
| Lhc (In-Tend portal) SC | Scotland | in-tend | Weekly | Today | 35 |
| Lichfield Council EN | West Midlands | generic | Weekly | Pending | 0 |
| Lincoln Council EN | East Midlands | generic | Weekly | Pending | 0 |
| Lincolnshire County Council EN | East Midlands | generic | Weekly | Pending | 0 |
| Lincolnshire Housing Partnership Limited EN | Yorkshire and the Humber | in-tend | Weekly | Today | 7 |
| Lisburn and Castlereagh City Council NI | Northern Ireland | bravo | Weekly | Pending | 0 |
| Liverpool Hope University EN | North West | in-tend | Weekly | Broken | 0 |
| Liverpool John Moores University EN | North West | in-tend | Weekly | Broken | 0 |
| London & Quadrant Housing Trust EN | London | in-tend | Weekly | Today | 331 |
| London Borough of Barking and Dagenham EN | London | bravo | Weekly | Today | 8 |
| London Borough of Ealing Council EN | London | atamis | Weekly | Today | 56 |
| London Borough of Enfield EN | London | atamis | Weekly | Today | 35 |
| London Borough of Havering EN | London | atamis | Weekly | Today | 14 |
| London Borough of Wandsworth EN | London | atamis | Weekly | Today | 56 |
| London Luton Airport Operations Limited EN | East of England | bravo | Weekly | Broken | 0 |
| Low Carbon Contracts Company Ltd EN | London | delta | Weekly | Broken | 0 |
| Luton Council EN | East of England | procontract | Weekly | Today | 88 |
| Maidstone Council EN | South East | generic | Weekly | Pending | 0 |
| Maldon Council EN | East of England | generic | Weekly | Pending | 0 |
| Malvern Hills Council EN | West Midlands | generic | Weekly | Pending | 0 |
| Mansfield Council EN | East Midlands | generic | Weekly | Pending | 0 |
| Medway Council EN | South East | generic | Weekly | Pending | 0 |