Before the MGB crashes it's quite a clean example. Once it's crashed and is lying on its side it has large rust holes at the ends of the sills.
When Morse buys his second pint he receives a full glass. When the camera returns to Morse as he picks the glass up the level of beer has dropped an inch
Tsk tsk, Inspector Morse! At about 0:58:01 shocking to hear Morse say incorrectly that the flag on the house was lowered to half mast (that's for ships). The correct term is 'half staff.'