Hi bizzey
Re student finance, not sure anything had to be shown (as yet). They asked for student plus parent(s) NI numbers, details of income, pensions, savings interes, details of dependants etc... and that was it. It probably took under 30 mins to do the three strands (DS + two parents).
Maybe, also do research into the best student bank accounts (extras being a bonus!).
Start thinking about 'the bottom drawer' items?
You probably need to investigate what's next regarding accommodation - different universities seem to have different ways of doing things.
Personally if the tables were turned, I'd probably be quite slow to commit, given the ££££ loan involved! I can understand that it's a huge thing for them at their ages.
Putting things in perspective, it's only five months until offers day! Yikes!