- Craig Brands
- 15 Watt Street, Greenock, Renfrewshire, PA16 8JN
- Conner Electrical
- Unit 5, Sandbank Industrial Estate, Sandbank, Dunoon, Argyll And Bute, PA23 8PB
- Ecosse Services
- 15 Watt Street, Greenock, Renfrewshire, PA16 8JN
- Eglinton Electronics
- 9 Annetyard Drive, Skelmorlie, Ayrshire, PA17 5BN
- Electronic Services & Cons
- 18 Glen Grove, Largs, Ayrshire, KA30 8RA
- Eltec Services
- Somerset Ho, Garelochhead, Helensburgh, Dunbartonshire, G84 0EL
- Halliday Electrical
- 9 Terrace Road, Greenock, Renfrewshire, PA15 1DJ
- J.M.K
- Unit 8, Block 2 Vale Of Leven Indust Est, Alexandria, Dunbartonshire, G83 0DS
- Kilcreggan Electrical Services
- Garden House Argyll Rd, Kilcreggan, Helensburgh, Dunbartonshire, G84 0HU
- William Lafferty
- Empress Ct New Cartsburn Maritime Indust Est, Greenock, PA15 1AA
- Lyon Trade Services
- Laurel Ldg, Clynder, Helensburgh, Dunbartonshire, G84 0QD
- National Semiconductors
- Larkfield Industrial Estate, Greenock, Renfrewshire, PA16 0EQ
- I.G Walker
- 16 Waverley Avenue, Helensburgh, Dunbartonshire, G84 7JU