Don't despair cause there's still a strong search for software developers on the market. Java is still a good technology to know, since a lot of people are interested in that. Otherwise, you can just spend a couple of weekends in your room, learning a new technology and making a fun project out of it.

Also, next time you get a job, try to get it in a small company (max. 50-100 people), because those are the companies that really need to be on top of their game in order to make a profit, so you'll be learning a lot of new stuff there.

Here's a couple of websites to get you started on your job hunt:

http://startuply.com/ - startups

http://careers.stackoverflow.com/ - I actually did a search on london and quite a few companies popped up

http://jobs.github.com/positions

I follow the London craigslist and that one has some open start-up positions every now and then

And also there is www.monster.com, but the postings there are not usually startups.

I wish you good luck. If you make it big in a start-up, let us know how you did it.