| Onward Group Limited EN | North West | in-tend | Weekly | Today | 7 |
| ORE Catapult EN | Scotland | delta | Weekly | Today | 88 |
| Orkney Council SC | Scotland | generic | Weekly | Pending | 0 |
| Orwell Housing Association Ltd EN | East of England | in-tend | Weekly | Today | 7 |
| Oxford City Council EN | South East | in-tend | Weekly | Broken | 0 |
| Oxford Council EN | South East | in-tend | Weekly | Today | 69 |
| Oxfordshire County Council EN | South East | atamis | Weekly | Broken | 0 |
| Pagabo (In-Tend portal) EN | Yorkshire and the Humber | in-tend | Weekly | Today | 35 |
| Paragon Asra Housing Limited EN | South East | in-tend | Weekly | Today | 7 |
| Pd Teesport Limited EN | North East | in-tend | Weekly | Broken | 0 |
| Pembrokeshire Council WL | Wales | generic | Weekly | Pending | 0 |
| Pendle Council EN | North West | generic | Weekly | Pending | 0 |
| Pension Protection Fund EN | London | bravo | Weekly | Broken | 0 |
| Perth and Kinross Council SC | Scotland | generic | Weekly | Pending | 0 |
| Peterborough Council EN | East of England | generic | Weekly | Pending | 0 |
| Placegroup (In-Tend portal) EN | London | in-tend | Weekly | Today | 8 |
| Places for People Group Limited EN | London | delta | Weekly | Today | 7 |
| Places for People Group Limited EN | London | delta | Weekly | Today | 24 |
| Plus Dane Housing Limited EN | North West | delta | Weekly | Today | 7 |
| Plymouth Council EN | South West | generic | Weekly | Pending | 0 |
| Police & Crime Commissioner for Merseyside & Chief Constable for Merseyside EN | North West | in-tend | Weekly | Today | 3 |
| Pool Re Services Limited EN | London | delta | Weekly | Today | 14 |
| Portsmouth Council EN | South East | generic | Weekly | Pending | 0 |
| Powys Council WL | Wales | generic | Weekly | Pending | 0 |
| Preston Council EN | North West | eusupply | Weekly | Today | 786 |
| Procurement for Housing Ltd (t/a PfH Scotland) SC | Scotland | in-tend | Weekly | Today | 98 |
| Public (Jaggaer portal) EN | West Midlands | bravo | Weekly | Broken | 0 |
| Queen's University Belfast NI | Northern Ireland | in-tend | Weekly | Today | 7 |
| Reading Council EN | South East | generic | Weekly | Pending | 0 |
| Redbridge Council EN | London | generic | Weekly | Pending | 0 |
| Redcar and Cleveland Council EN | North East | generic | Weekly | Pending | 0 |
| Redditch Council EN | West Midlands | generic | Weekly | Pending | 0 |
| Redhill Academy Trust EN | East Midlands | in-tend | Weekly | Today | 7 |
| Reigate and Banstead Council EN | South East | generic | Weekly | Pending | 0 |
| Renfrewshire Council SC | Scotland | generic | Weekly | Pending | 0 |
| Rhondda Cynon Taf Council WL | Wales | generic | Weekly | Pending | 0 |
| Ribble Valley Council EN | North West | generic | Weekly | Pending | 0 |
| Richmond upon Thames Council EN | London | generic | Weekly | Pending | 0 |
| Rochdale Council EN | North West | generic | Weekly | Pending | 0 |
| Rochford Council EN | East of England | generic | Weekly | Pending | 0 |
| Rossendale Council EN | North West | generic | Weekly | Pending | 0 |
| Rother Council EN | South East | generic | Weekly | 15d ago | 10 |
| Rotherham Council EN | Yorkshire and the Humber | generic | Weekly | Pending | 0 |
| Rssb EN | London | delta | Weekly | Today | 67 |
| Rugby Council EN | West Midlands | generic | Weekly | Pending | 0 |
| Runnymede Council EN | South East | generic | Weekly | Pending | 0 |
| Rushcliffe Council EN | East Midlands | generic | Weekly | Pending | 0 |
| Rushmoor Council EN | South East | generic | Weekly | Pending | 0 |
| Rutland Council EN | East Midlands | generic | Weekly | Pending | 0 |
| Rykneld Homes Limited EN | East Midlands | in-tend | Weekly | Broken | 0 |
| Salford Council EN | North West | generic | Weekly | Pending | 0 |
| Sandwell Council EN | West Midlands | in-tend | Weekly | Broken | 0 |
| Science Museum Group EN | London | in-tend | Weekly | Today | 58 |
| Scottish Borders Council SC | Scotland | generic | Weekly | Pending | 0 |
| Scottish Water SC | Scotland | atamis | Weekly | Today | 14 |
| Sefton Council EN | North West | generic | Weekly | 35d ago | 10 |
| Selwood Housing Society Limited EN | South West | in-tend | Weekly | Broken | 0 |
| Serious Fraud Office EN | London | bravo | Weekly | Broken | 0 |
| Sevenoaks Council EN | South East | generic | Weekly | Pending | 0 |
| Shetland Council SC | Scotland | generic | Weekly | Pending | 0 |
| Shropshire Council EN | West Midlands | generic | Weekly | Pending | 0 |
| Slough Council EN | South East | generic | Weekly | Pending | 0 |
| Social Work England EN | Yorkshire and the Humber | in-tend | Weekly | Broken | 0 |
| Solihull Council EN | West Midlands | atamis | Weekly | Today | 15 |
| Somerset Council EN | South West | generic | Weekly | Pending | 0 |
| South Ayrshire Council SC | Scotland | generic | Weekly | Pending | 0 |
| South Cambridgeshire Council EN | East of England | generic | Weekly | Pending | 0 |
| South Derbyshire Council EN | East Midlands | generic | Weekly | 19d ago | 0 |
| South Downs National Park Authority EN | South East | in-tend | Weekly | Today | 7 |
| South Gloucestershire Council EN | South West | generic | Weekly | 35d ago | 10 |
| South Hams Council EN | South West | generic | Weekly | Pending | 0 |
| South Holland Council EN | East Midlands | generic | Weekly | 9d ago | 0 |
| South Kesteven Council EN | East Midlands | generic | Weekly | Pending | 0 |
| South Lakes Housing EN | North West | in-tend | Weekly | Broken | 0 |
| South Lanarkshire Council SC | Scotland | generic | Weekly | Pending | 0 |
| South Norfolk Council EN | East of England | generic | Weekly | Pending | 0 |
| South Oxfordshire Council EN | South East | generic | Weekly | Pending | 0 |
| South Ribble Council EN | North West | generic | Weekly | Pending | 0 |
| South Staffordshire College EN | West Midlands | in-tend | Weekly | Broken | 0 |
| South Staffordshire Council EN | West Midlands | generic | Weekly | Pending | 0 |