Cor... certainly a lot of characters to dislike in those posts... for varying reasons. Have to admit I still have a soft spot for Ruth, even if her "Ohhh Nooooo" has been taken into comedy sketches. Probably quite like most of them, most of the time, apart from Tom and his parents (if Pat's not being 'holier than thou' about organic, Tony is having a moan about something... hardly remember him as a happy guy, though he must have been, some time back, before he needed hospital).
"Luckily she always goes back to being a vile crashing snob, then I can hate her again..." Yes, while Lynda has a few redeeming features (such as being humble towards Jazzer when she got it wrong about the Clan leader), I find her snootiness easy to make her dislikeable most of the time.
I think the few characters I've really disliked were Carl (Amy's "boyfriend" who was married) and Jude (Pip's boyfriend, who was a bad influence, oh yes, and that nasty student lending money to Alice and others in Southampton).
While trying to remember Tony's name (I'm older than Tamsin Greig!) I found this page on Wiki which might help others wanting to see a few family trees. It's not as detailed as some other works about the characters, but it has 3 or 4 helpings that are easily digested and bring you up to date with some of the affairs and break ups, and why X is not on speaking terms with Y (eg Shula, Alan + Usha). Ignore the note on the page saying it is outdated - keen listeners have been giving it updates from 2010 to this year, so the fact Brenda is away is included...