UCL not making offer unconditional (intl CS)

I'm an intl CBSE student who got an offer for CS at UCL. I made my conditionals, and I've sent my official grades and transcripts, but they haven't made my offer unconditional yet? Is this standard procedure? will they wait till August 14th for A-level results?

My parents are panicking and want to insure something in-state (which will cost like £12k) which I understand, but I want to be able to re-assure them that UCL is still on the table.

If there are any other CBSE students in the same boat, let me know. thank you in advance.