| UAP | 200030 |
| Ubanvision Parnership Ltd | M30 0TE |
| Ubbink.UK Ltd | NN13 7TB |
| ubc | G81 6JJ |
| UBC Group Ltd | IV11TR |
| Ubique Architects | ME2 4FA |
| UCB | SL1 3WE |
| UCD(Southwell)ltd | NG25 0TX |
| UCL | E11 3SB |
| UCL | E14 OEU |
| UCL | WC1E 7HB |
| UCS Civils | LN8 5NU |
| Ugam chemicals | 411009 |
| UGEI | 11371 |
| UGL Limited | 24039 |
| ugs | OX16 2RP |
| UH Bristol | BS2 8HW |
| UK & GH Construction | N/A |
| UK & GH Construction Ltd | N\A |
| UK Assets Ltd | BR1 2HZ |
| UK Carpet Cleaning Service | S21 2JU |
| uk coal | CV7 8HS |
| UK Coal Mining Limited | DE7 6DW |
| UK Facades Ltd | WD6 1RN |
| UK Garden Buildings (OB) Ltd | WS15 1UY |
| UK IT RECYCLING.COM | TF6 5ER |
| Uk Led Lights | TF2 7QZ |
| UK Paving Stone | HA6 2PX |
| UK Screeders Limited | BS4 5QY |
| UK Sewage Systems Ltd | CB25 0GH |
| uk south services ltd | SL14JG |
| UK Upvc Direct | WA9 4TU |
| UK Waterproofing Solutions | DE6 3FN |
| UK Workspace | S1 2AT |
| UK Worldwide Eng. | CR6 9HS |
| UKATC | EH9 3HJ |
| UKAUME NIGERIA COMPANY LIMITED | 100012 |
| UKD Groundworks & civil Engineering Ltd | HP3 9SR |
| UKPNS | DA123AN |
| ultimate bathrooms | RG45 7AL |
| ULTIMATE ENGINEERING LTD | +254 |
| Ultimate Exteriors Ltd | NE31 2LH |
| ultimate roofing llp | DT4 9NR |
| Ultra Electronics PMES Limited | WS15 1UZ |
| Ultra Elite Lifts & Escalators Contracting LLC | 00000 |
| Ultra Tectonic Systems Ltd | GU5 9EG |
| Ultrabrook Limited | IG8 8EY |
| ULTRALEX | L4Z1N4 |
| Ulysses Powertech | 1219 |
| undercover roofing | SS6 7XF |
| Underhill Building Services | EX2 7JX |
| underhill engineering | PL6 7LQ |
| Undi Company ltd | 255 |
| Unichem Group | 11181 |
| Unicomer | 00000 |
| Unicon Limited | 19652 |
| Unicorp | 31996 |
| Unidig Ltd | SS7 3EH |
| Unidrain A/S | 2600 |
| Uniform Construction Ltd | IRELAND |
| Unifrax Limited | WA11 8LP |
| Unilever K Ltd | 00100 |
| Unilife Property LLP | CB8 7YP |
| UNIMULTI-LINK.GH.LTD | +233 |
| Union Marketplace | DN31 1 DB |
| Unipart Rail | CW2 6EH |
| Uniq Management Services Ltd | BR4 9DA |
| Unique Bespoke Wood | EH7 5DP |
| Unique Fitout | T45 CC67 |
| Unique Office Solutions Ltd | IG6 3SZ |
| Unisol SA | 1005 |
| Unit Design and Developments Limited | DH8 5NW |
| UNITA COMPANY FOR TRADE AND SUPPLIES | 00972 |
| Unitec | 0602 |
| Unitec PIpe | 1104 |
| unitech | 3232 |
| United Agencies Limited | TN38 9SJ |
| United Biscuits | M192SD |
| UNITED BUILDERS & CONTRACTORS (A) LTD. | 00100 |
| United Cermics and Building Materials ltd. | KABUL |
| UNITED ELECTRONIC SYSTEMS | 11371 |
| United Energy Pakistan Ltd. | 13270-02LB |
| united flexo suplies ltd | NE9 5HT |
| United Group Resources | 6000 |
| United House | BR8 8EX |
| United House Ltd | N17 9QQ |
| United Reformed Church | OX4 2ET |
| United Shopfront LTD | E12 6PS |
| United States Air Force | 09601 |
| United States Air Force | 54516 |
| United Steel Trading & Marketing W.L.L | 321 |
| United Utilities | WA5 3UZ |
| unitedelectric | 364001 |
| unity partnership | OL1 1NY |
| Universal Aluminium Systems | L20 1AF |
| Universal Engineers | 421306 |
| UNIVERSAL HEATING SOLUTIONS | 8455280042 |
| Universal Resorts | 20-20 |
| Universal Stone Ltd. | CM6 3PS |
| UNIVERSAL TRIANGLE CORP | 33166 |
| universidad de chile | NOSE |
| university hospital of north staffs | ST4 6QG |
| University Hospitals Morecambe Bay NHS Trust | LA1 4RP |
| University Hospitals Southampton | SO166YD |
| university in ljubljana | 1000-SI |
| University of Bath | BA2 7AY |
| University of Bedfordshire | LU1 3BE |
| University of Birmingham School | B29 6QU |
| University of Brighton | BN2 4GJ |
| University of Bristol | BS2 8BB |
| University of Cambridge | CB2 3QZ |
| University of Dundee | DD1 4HN |
| university of edinburgh | EH16 5AY |
| University of Edinburgh | EH9 3JL |
| University of Edinburgh | EH9 3JT |
| university of essex | CO4 3SQ |
| University of Exeter | EX4 4PX |
| University of Exeter | EX4 4RN |
| University of Leeds | LS2 9JT |
| University of Leeds | LS2(BT |
| university of Liverpool | L69 7JP |
| University of Manchester | M13 9PL |
| University of Oxford | OX1 5NY |
| University of Plymouth | PL4 8AA |
| University of Salford | M5 4WT |
| University of Strathclyde | G11 5PG |
| University of Surrey | GU25 4DF |
| University of Sussex | BN1 9RJ |
| University of the arts London | WC1N 3LA |
| University of the West of England | BS16 1QY |
| University of the West of England | SN10 4NT |
| University of the west of Scotland | PA1 2BE |
| University of Ulster | BT37 0QB |
| University of wales newport- | NP18 3 QT |
| University of Worcester | WR2 6AJ |
| Uniworks Co. Ltd. | 135-010 |
| unlock4u24 locksmith | SY111FE |
| UNOPS | 00500 |
| Unuiversity of Glamorgan | CF37 1DL |
| UoP | PO1 3AH |
| UP Govt construction Corporation | PL487 |
| UPA | 109122 |
| UPL Environmental Engineers Ltd. | 390022 |
| UPP | EC3V 0BT |
| Uppal Hospitality PVT Ltd | 110003 |
| UPShousing | 261000 |
| Upton McGougan | SO23 7RX |
| Urang Renovations Ltd | SW6 4NF |
| Urbahn Architects | 100018 |
| Urban Construction Interiors Ltd | YO19 6ET |
| Urban Decor | BL8 1NU |
| Urban Design | B4 7DG |
| urban design & planning | SW19 4HT |
| Urban Infusion | ST14 8TU |
| urban splash | BS13 7TJ |
| Urban Surveying & Design Ltd | CT10 1JB |
| urban vision | M30 0TE |
| Urban Vision | M30 0TE |
| Urban Vision Partnership | M30 )TE |
| Urban&Civic | W1S 1BJ |
| Urbana IDR | WU13RZ |
| urbandesign | SE22 8EA |
| Urbane Tiles | PR1 4HH |
| Urbanroofgardens | W5 5LH |
| Urbian | SW19 1NE |
| urbis construction | BS1 6EA |
| Urdd Gobaith Cymru | CF72 8TH |
| urquhart homes ltd | IV4 7AT |
| URs | G4 0JY |
| URS | G82 5DY |
| URS | PL1 1LD |
| URS | RG21 7PP |
| URS | S |
| URS | T |
| URS | TF3 1XU |
| URS Corp Ltd | MK40 1TS |
| URS Corporation | KA18 1BA |
| URS corporation Ltd | EH7 4LZ |
| URS Corporation Ltd | G2 4QE |
| URS Corporation Ltd | MK40 1TS |
| URS Corporation Ltd | SW19 4DR |
| URS Infrastructure & Environment Limited | CA24 3HZ |
| URS Scott Wilson | B4 7LR |
| URS-IAP | FPO AE 093 |
| URS/ScottWilson | BT87RP |
| Ursa Gates Ltd | G40 2TA |
| Urwin Energy | NE38 9EX |
| USPS | 11373 |
| Utilicom ltd | RH10 9UT |
| Utkarsha Enterprises | 403005 |
| utopia building solutions | LS11 5HL |
| utsl | 7007 |
| UTSL | DN47RY |
| UWE | BS6 5BU |
| UWE Bristol (Academic) | BS16 1QY |
| UWIC | CF5 2YB |
| Uzin Ltd | CV23 0UY |
