You could try the on line legal peoples - seriously, your Google-fu needs working on.
I know someone who's used them. I'm pretty sure that they are straight up about being solicitors - but because of the nature of your enquiry, they can't give you just quite the same guarantees as if you were there in the office with all your paperwork.
You'll end up getting your answer for about £25. The link I'll put up says it's free, but I haven't read the site properly.