Given Ken's loooong history of womanising, and the fact he and Deirdre barely spent any time together in the last couple of years of her life, I don't see any problem with him getting together with Audrey fairly quickly. I've heard of several widowed people who've lost spouses of many years marrying again rapidly because they can't bear to be alone.
I don't think being elderly necessarily has much to do with it either. Even if the body ails, many people still crave love and intimacy whatever their age. However, I do agree with MM that the presumably much younger Nessa panting after Ken is a bit far-fetched!
To me, Roy finding a new partner is much more unbelievable. I think he'd have spent the rest of his life alone in reality, although I'm happy to see him with Cathy because I don't want to watch him being lonely.
I noticed Liz's hair too. It looked like a haystack!![]()