I have spotted in a couple of episodes where Foggy is wearing a Jacket instead of his big coat,they were Car & Garter and The Dewhirst of Oglby Hall, what other episodes did he wear a jacket
Foggy never looked right in a jacket his combat jacket looked perfect,in the 1960,s I used to wear ex USA army combat jackets for cycling in the winter they were realy warm and lightweight and you could only get them in olive green so they were never a fashion statement.
I think you are right - he only wore a suit for weddings or funerals - otherwise it was the regimental blazer and at other times under the green combat jacket was a tweed jacket either brown or green: we did see him in this when taking tea at Compo's house