Re abusive men the Archer women have been involved with, this is more or less a cut and paste job from a post of mine in December:
Shula had a thing with Simon Pemberton for a while, but he hit her, so she ended it. Simon's father Guy was married to Shula's best friend Caroline (Simon was about their age, so that was rather tense). Later Simon got involved with Debbie and hit her too, which Shula felt very bad about, because she felt she should have warned Debbie. She supported Debbie when she went to the police. He was prosecuted but got off with a suspended sentence or a small fine. Guy was disgusted by his son's behaviour, IIRC. Shortly after that he had a heart attack and that left Caroline a widow. Simon sold off the Estate to Borchester Land and has never come back to Ambridge.
Shula then had a fling with Doc Locke in spite of the fact that he was living with Usha and she was going out with Alistair. All very torrid!
Elizabeth went out with Nigel in a fairly casual way but then got involved with Cameron Fraser, who had previously gone out with Caroline. Cameron was a chancer whose business ventures went badly wrong, losing a lot of people a lot of money (including Caroline and Marjorie Antrobus). He prepared to flee the country. Elizabeth wanted to go with him - moral compass completely broken, apparently - and he said OK, but abandoned her at a motorway service station. She was pregnant and decided to have a termination. She got together with Nigel after that and of course eventually married him.
Debbie had an on off thing for years with her university lecher lecturer Simon Gerrard, eventually marrying him, but that ended in divorce. She was also involved with Simon Pemberton (see above) and (I think) Richard Locke, when he was keen on The Sealed Knot and before he got together with Usha.
That's probably all about as clear as muc! 