Yeah I've called them up a few times now and got more information from them.
It turns out it is quite possible but they just don't really want to because it involves additional paperwork and possibly cost. Also since it is a deicing job there is a time constraint and they say they don't think it will be processed in time.
Given the choice they'd just rather hire someone who's been in the UK for 5 years, which is really annoying for me.
cgwhitemonk - How long did it take to get the Spanish CRC? If it's reasonably quick maybe I could get the CRC for them...