I don't even think you can adopt an infant if you're over 40 in the UK. I believe there's a 40 year above the child's age limit.
In good news, they've figured out a way to make IVF treatments more effective and to cut down on multiple births by testing the eggs. Basically, it's going to be a process in most cases where one egg is implanted and hopefully around normal risk of miscarriage.
ETA: I somehow managed to skip a load of posts in this thread, so this might have been brought up already, and my post seemed a bit less out of the thread of discussion from where I mistakenly left off from reading.