Tier 2 Sponsors (UK) for Software Engineers?

Hello! Although I did my postgraduate degree in the UK, I was forced to leave soon after because I could not arrange a position wherein the employer was able to sponsor me for a Tier 2 visa. I am now much further along in my career, and believe I possess a skillset which might motivate an employer to go through the trouble of visa sponsorship. So, I'm now looking to relocate to the UK (London, preferably). So, the question - does anyone know of employers who are capable of Tier 2 sponsorship, and are actively looking for engineers? Although I don't really want to post all my information here, my user name is indeed my (full) real name. Any information is helpful! I have found these opportunities to be quite rare.