BR type 2 locos, 263 built by Brush between 1957 and 1962, Originally built with a Mirrlees engine, subsequently refitted with English Electric engines. Under the TOPS scheme the Mirrlees engined examples were class 30, the EE engined locos were class 31.
Originally numbered D5500 to D5699 and D5800 to D5862.
In the TOPS scheme the first 20 were numbered as 31001 to 31019 (exceptD5518 which had been rebuilt as a class 31/1 after accident damage). These locos had non standard controls and multiple working equipment.
The standard locos were renumbered 31101 to 31327.
Class 31/4 was class 31/1 locomotives converted to Electric Train Heating, numbered 31400 to 31469
Class 31/5 was class 31/4 with ETH isolated for engineering train use. The numbering retained the final two numbers, e.g. 31456 became 31556.
Class 31/6 was class 31/1 locos through wired for ETH, but could not supply ETH.
Class 31/9 was the former 31326 in Research Department use.

31102

2 photos
31102

31106

1 photos
31106

31107

2 photos
31107

31119

1 photos
31119

31120

1 photos
31120

31125

1 photos
31125

31142

2 photos
31142

31146

3 photos
31146

31147

1 photos
31147

31159

1 photos
31159

31161

1 photos
31161

31163

3 photos
31163

31166

1 photos
31166

31185

1 photos
31185

31187

1 photos
31187

31191

1 photos
31191

31201

2 photos
31201

31203

1 photos
31203

31206

1 photos
31206

31210

1 photos
31210

31212

1 photos
31212

31215

1 photos
31215

31217

1 photos
31217

31218

1 photos
31218

31223

1 photos
31223

31229

2 photos
31229

31233

1 photos
31233

31235

1 photos
31235

31239

1 photos
31239

31244

1 photos
31244

31245

1 photos
31245

31247

1 photos
31247

31252

1 photos
31252

31258

1 photos
31258

31259

1 photos
31259

31272

1 photos
31272

31273

1 photos
31273

31281

1 photos
31281

31292

1 photos
31292

31295

1 photos
31295

31302

1 photos
31302

31304

1 photos
31304

31306

1 photos
31306

31309

2 photos
31309

31320

1 photos
31320

31404

1 photos
31404

31414

1 photos
31414

31416

1 photos
31416

31417

1 photos
31417

31418

1 photos
31418

31423

1 photos
31423

31424

1 photos
31424

31428

1 photos
31428

31432

2 photos
31432

31435

1 photos
31435

31444

1 photos
31444

31452

1 photos
31452

31455

1 photos
31455

31461

2 photos
31461

31465

1 photos
31465

31466

1 photos
31466

31538

1 photos
31538

31541

1 photos
31541

31545

1 photos
31545

31546

1 photos
31546

31549

3 photos
31549

31551

2 photos
31551

31552

1 photos
31552

31553

1 photos
31553

31554

2 photos
31554

31563

1 photos
31563

31568

1 photos
31568

D5605

1 photos
D5605

D5638

1 photos
D5638

D5647

1 photos
D5647

Unidentified Class 31

4 photos
Unidentified Class 31