| Office Name | Location | TEL | FAX | |
| Abacus | Scotland | Livingston | 01506 424200 | 01506 424243 |
| Abacus | North | Boston Spa, Yorkshire | 01937 841312 | 01937 841062 |
| Abacus | North East | Boston Spa, Yorkshire | 01937 841312 | 01937 841062 |
| Abacus | Eiger | Worsley, Manchester | 0161 727 3010 | 0161 727 3029 |
| Abacus | Midlands | Daventry, Northamptonshire | 01327 310061 | 01327 310023 |
| Abacus | Choice | Cottenham, Cambridgeshire | 01954 287070 | 01954 252078 |
| Abacus | Orion | Leighton Buzzard, Bedfordshire | 01525 858022 | 01525 858019 |
| Abacus | West | Stonehouse, Gloucestershire | 01453 794111 | 01453 791252 |
| Abacus Polar | Head Quarters | Newbury, Berkshire | 01635 36222 | 01635 515754 |
| Abacus | AIM | Newbury, Berkshire | 01635 515739 | 01635 528534 |
| Abacus | Aim Premier | Newbury, Berkshire | 01635 551881 | 01635 528534 |
| Abacus | Express | Newbury, Berkshire | 01635 551881 | 01635 528534 |
| Abacus | Major Accounts | Newbury, Berkshire | 01635 551211 | 01635 550009 |
| Abacus Polar | Gold | Leighton Buzzard, Bedfordshire | 01525 858111 | 01525 858222 |
| Abacus Polar | Resource | Leighton Buzzard, Bedfordshire | 01525 858204 | 01525 858001 |
| Abacus Polar | Chiltern | Leighton Buzzard, Bedfordshire | 01525 858282 | 01525 858280 |
| Abacus Polar | Matrix | Leighton Buzzard, Bedfordshire | 01525 858080 | 01525 858081 |
| Abacus | South | Crawley, West Sussex | 01293 440144 | 01293 440138 |
| Abacus | Hawke | Bramley, Hampshire | 01256 884300 | 01256 880325 |
| Abacus | Solent | Eastleigh, Hampshire | 01703 263516 | 01703 263514 |
| Abacus | Northern Ireland | Tandregee, County Armagh | 028 38 842919 | 028 38 849848 |
| Abacus | Ireland | Mungret, Limerick | +353 (0)61 480166 | +353 613 02777 |