Routes prefix is hm.
All Diamond Bus South vehicles are either white without branding, in various Diamond Bus or Hallmark liveries, or in Hotel Hopper livery.
short codes specific for Diamond Bus South are :-
| h = | Hotel Hoppa | |
| p = | Heathrow Purple | |
| s = | Silver | |
| u = | unrepainted from previous owner | |
| w = | White | |