Class 08 and 09 - gronks, rods
Class 20 - bombs, wardrobes
Class 31 - peds (or pedal carts)
Class 33 - shredders, Cromptons (or Cr@ptons)
Class 37 - syphons, growlers
Class 40 - buckets, tats
Class 44, 45, 46 - wagons
Class 47 - spoons
Class 50 - vacs
Class 56 - grids, christmas trees
Class 58 - bones
Class 153 - dogboxes, tin rockets
Class 201 to 207 - thumpers
Class 220 and 221 - vomits
Class 350, 444 and 450 (also class 380 and 700) - doodlebugs (ie built in Germany)
Other nicknames
Sutton to Wimbledon line - Wall of Death