Aveling and Porter Ltd

Andrew Barclay Sons and Company Ltd

W G Bagnall Ltd

Baguley Drewry Ltd

F C Hibberd & Co

Hudswell Clarke & Co Ltd

Hunslet Engine Company

Kerr Stuart & Co Ltd

Société John Cockerill

North British Locomotive Company

Peckett & Sons Ltd /
Fox Walker & Co

R & W Hawthorn Leslie & Co Ltd /
Robert Stephenson & Hawthorn Ltd

Sentinel Waggon Works

Yorkshire Engine Company

John Fowler & Co

Ruston & Hornsby Ltd

J & F Howard Ltd of Bedford

Robert Avonside

Manning Wardle & Company