The tram will be repaired in house at the depot, unless complex structural repairs are needed, in which case it'll go by road to Alstom Litchurch Lane. This will be avoided unless absolutely necessary, it just depends on the extent of the damage under the surface.
The same tram was in a very bad collision last June at Queens Walk where it hit a traction pole, but it was actually just cosmetic damage and it was all repaired in house, despite it looking extremely destroyed!
I have no idea where buses are repaired. Something this severe probably at the ADL factory in Scarborough?