I'm on my second career break now (due to the 'economic climate', etc) and I sussed out that agency in London. I got the impression that they also were looking for young women but give them a try, you never know. Perhaps it was because I'm a bloke?
I've actually been studying since my first career break and have worked for a few smaller airlines on temporary contracts, just to keep myself active in the industry. I find it's hard to put flying behind you. At first, it's great not having to get up at 0400 but after a while you miss it but by the time my temporary contracts have been up, I've been glad to stop flying. Then, a few months later, I'm missing it again.
The way things are at the moment, studying might be an idea for you. You can get funding for your fees, plus maintenance grants which don't have to be paid until you start earning GBP17K (fat chance these days) and you can work part time to sustain yourself.