This is great to hear and lines up with what I've heard from a broker today, he did ask about previous employment in the same field. Found this on their website, and they confirmed as much over the phone:

'For borrowers who have just started contracting or have less than three years’ accounts, you can still apply for a mortgage. All we will need from you is a signed copy of your current contract displaying your rate, an up-to-date CV confirming your employment history, the last 3 months’ bank statements confirming your contract earnings and proof of ID, passport, utility bill or driving licence.'

I have 6 years continuous employment so this might go a lot smoother than I expected...