- John M Carter Ltd - Winchester Road Industrial Estate, Basingstoke, Hampshire, RG22 4AB
- John Macintyre & Son - 14 Mitchell Lane, Glasgow, Lanarkshire, G1 3NU
- John Maden & Son Ltd - Market Street, Bacup, Lancashire, OL13 0AU
- John Martin-Hoyes Limited - Martin House, Lincoln, Lincolnshire, LN6 3JZ
- John Mason (International) Ltd - Unit 5, Croydon, CR0 4AA
- John Master Consultancy Ltd - 18 Wedgwood Avenue, Newcastle, Staffordshire, ST5 2JD
- John McGavigan Ltd - 111 Westerhill Road, Glasgow, Lanarkshire, G64 2QR
- John McNicol & Co Electrical Engineers Ltd - 123 Elliot Street, Glasgow, Lanarkshire, G3 8EY
- John McQuillan Contracts - 11 Ballinderry Road, Lisburn, Co. Antrim, BT28 2SA
- John Melvin Electrical Contracting - Unit 1 New Dunn Business Park, Coleford, Gloucestershire, GL16 8JD
- John Moncrieff Ltd - Unit 11 Clashburn Road, Bridgend Industrial Estate, Kinross, Scotland, KY13 8GB
- John Moore (Tractor Parts) Ltd - Ladford covert, Stafford, ST18 9QG
- John Moore Sports - 2 Argyle Street, Bath, Avon, BA2 4BA
- John Morfield Ltd - Unit 98, Sadler Forster Way, Stockton On Tees, Cleveland, TS17 9JY
- John N Dunn Group - 6b Dunnet Way, Broxburn, West Lothian, EH52 5NN
Companies 1006 to 1020 | Page 68 of 94