- Blackburn Starling - Dunsil Drive, Nottingham, Nottinghamshire, NG2 3AY
- Blackburn Tool Hire North West LTD - Unit 1, Hargreaves Lane, Blackburn, BB2 3PZ
- Blackburns Metals - Unit 2-3 St Andrews Trading Estate, Third Way, Bristol, Avon, BS11 9YE
- Blackchair - Abbey House, Reading, Berkshire, RG7 4SA
- Blackcode Advertising - Direct Marketing - 1-6 Grand Parade, Brighton, Sussex, BN2 9QB
- Blackdot Solutions - Viola House, Cambridge, Cambridgeshire, CB2 9LG
- Blackdown Dental - Farthingdown Coombe, Wellington, Somerset, TA21 0EH
- Blacker Steel Fabrications Ltd - Outgang Lane, York, North Yorkshire, YO19 5UP
- Blackfast Chemicals Ltd - Unit B, Chessington, KT9 1EU
- Blackfive Engineering Ltd - 16 Beeston Court, Cheshire, WA7 1SS
- Blackfriar Paints - Tor Coatings Ltd - Shadon Way, County Durham, DH3 2RE
- Blackhall Engineering Ltd - Bradford Road, West Yorkshire, HD6 4DJ
- Blackheath Products Ltd - Units2-4 Fairfield Park Trading Estate, Halesowen, West Midlands, B62 9JL
- Blacklake Systems Ltd - Unit 6a Whitebridge Estate, Stone, Staffordshire, ST15 8LQ
- Blacklands Fire - 35 St Helens Park Road, Hastings, East Sussex, TN34 2DN
Companies 1921 to 1935 | Page 129 of 262