You have the experience right? You also know that you know more than those lucky to have seat-of-the-pants experience right? Just an idea. Why don't you sex up your CV and apply for .NET positions around the UK or even in the EU where they are even more deperate for people. Write to all the agents you previously sent your CV to and ask them to delete your details in accordance with privacy requirements. Don't send these ones the new one for several months. Get a few friends to be available to give you good references. Remember that you are competing against people who are very good at this sort of bullshit thing but have never taken the time to get certified.