It really depends on what field you're going into and what specifically the employers you'll be courting will be looking for. For example, having a degree in philosophy was a major boost at my current job, because there are (oddly) so many CS majors out there with no critical thinking skills.

I was going to give various detailed advice here, but I realized I have no idea what the tech jobs are like in the UK. I assume they involve a lot of paperwork.