- A Sharman
- 020 88682258 - 105 Drake Road, Harrow, Middlesex, HA2 9DZ
- Class One Maintenance Services Ltd
- 020 84220133 - 47 Alexandra Avenue Harrow, Midlesex, HA2 8PQ
- New Century Construction
- 0845 2914084 - 1a Rayners Lane, Harrow, Greater London, HA2 0UD
- Wealdstone Joinery
- 020 88615103 - 50 Station Road, Harrow, Middlesex, HA1 2SQ
- Get Carter Joinery
- 020 32260090 - 34 The Chase, Eastcote, Pinner, Middlesex, HA5 1SN
- 1.7 miles from Harrow
- Abbey Lofts
- 020 88616263 - 64 College Road, Harrow Weald, Harrow, Middlesex, HA3 6EB
- 2.7 miles from Harrow
- ALS Construction
- 07973 386763 - 19 Bengarth Drive, Harrow, Middlesex, HA3 5HX
- 2.7 miles from Harrow
- J and M Potter Carpentry and Lofts
- 0845 1365544 - 31 Kenton Lane, Harrow, Middlesex, HA3 8UH
- 2.7 miles from Harrow
- Loft Extensions
- 020 89585858 - Leamington Ho Stonegrove, Edgware, Middlesex, HA8 7TN
- 4.7 miles from Harrow
- Pro-struct Building Services
- 020 83813994 - HA8 6LF
- 4.7 miles from Harrow
- Village Joinery
- 01923 854406 - Pursley Fm London Rd, Shenley, Radlett, Hertfordshire, WD7 9EN
- 6.0 miles from Harrow
- Touchwood Specialist Joinery
- 020 82075117 - Dayson Wks Warwick Rd, Borehamwood, WD6 1SJ
- 6.2 miles from Harrow