- Rexfield Engineering Ltd (Address: Runnymede Malthouse, Malthouse Lane, Egham TW20 9BD)Location: SloughCategory: Engineering
- M.T Perry Engineering Ltd (Address: Unit B, Gladstone Ind Est, Denmark St, Maidenhead SL6 7XJ)Location: SloughCategory: Engineering
- Howes Atkinson Crowder LLP (Address: Unit N, Bourne End Business Park, Cores End Rd, Bourne End SL8 5AS)Location: SloughCategory: Engineering
- Williamson Partnership (Address: 123 Oatlands Drive, Weybridge KT13 9LB)Location: SloughCategory: Engineering
- Protech - Land & Marine Project Engineering Ltd (Address: River House, Riverside Way, Uxbridge UB8 2YF)Location: SloughCategory: Engineering
- Concept Engineering Ltd (Address: Unit 7, Woodlands Business Park, Woodlands Park Avenue, Maidenhead SL6 3UA)Location: SloughCategory: Engineering
- Leemark Engineering (Hayes) Ltd (Address: Rigby Lane, Hayes UB3 1ET)Location: SloughCategory: Engineering
- Structural Engineering Services (Address: Unit 21, Tims Boatyard, Timsway, Staines-Upon-Thames TW18 3JY)Location: SloughCategory: Engineering
- HARVEN FORM FOUNDRY (Address: Rigby Works, Rigby Lane, Hayes UB3 1ET)Location: SloughCategory: Engineering
- Sugmus Engineering Services Ltd (Address: Audit House, 260, Field End Road, Ruislip HA4 9LT)Location: SloughCategory: Engineering
2016 the7.co.uk