In BR days the Southern Region favoured diesel-electric units (a.k.a. "Thumpers") for most of its non-electrified services, presumably because of their similarity to SR EMUs. AFAIK the only service wholly on Southern Region metals to have been worked by diesel-mechanical units was Reading-Tonbridge/Gatwick Airport, which was worked by Class 119s (and occasionally 101s and 117s) in the 1980s and early 1990s.
The only other example of DMMUs on the Southern I can think of is the Clapham Junction-Kensington Olympia shuttle, which I think went through phases of being worked by Bubble cars and Bletchley-based 104s (but was more often a DEMU or a Class 33+4TC), then when it was first extended to Willesden Junction in about 1995 it used Bletchley-based 117s until the whole line was electrified.
Then there were services that ran through onto the Southern, such as 123s on Cardiff-Portsmouth, and Westbury-Weymouth, which used a mixture of DMU classes: mainly 101s, 117s and 120s I think.
Can anyone think of any other examples of DMMUs on the Southern?
The only other example of DMMUs on the Southern I can think of is the Clapham Junction-Kensington Olympia shuttle, which I think went through phases of being worked by Bubble cars and Bletchley-based 104s (but was more often a DEMU or a Class 33+4TC), then when it was first extended to Willesden Junction in about 1995 it used Bletchley-based 117s until the whole line was electrified.
Then there were services that ran through onto the Southern, such as 123s on Cardiff-Portsmouth, and Westbury-Weymouth, which used a mixture of DMU classes: mainly 101s, 117s and 120s I think.
Can anyone think of any other examples of DMMUs on the Southern?