A Bit Of A Do S01 E02 The Dentist's Dinner Dance (1989) David Jason, Michael Jayston

Ted and Rita are Laurence’s guests at the dentist’s dinner dance,where,due to a misunderstanding,they are the only people in evening dress and where Ted tries to drum up trade for his foundry. Neville is still miserable, Elvis - working as a waiter - still arguing with Simon and Jenny still political,prompting a drunken Rodney to give up his factory. There are shocks in store for both Ted and his wife when Liz tells him she is pregnant,Laurence tells Rita that he knows their spouses have been having an affair and Rita’s father collapses on the dance floor.