Making suspenion higher

[Rich H]

That depends on what sort of springs you have.

If you have lowered springs, these can be replaced with a set of stock springs which will increase the height by at least an inch over the lowered ones.

[Chris P]

I'm sure there are dozens of sets of s/hand stock springs kicking around the UK!

Perhaps all your extra gear....Batteries? etc have taken their toll. Not a common problem, except for a few, very early cars who tried fitting lower springs and ended up in a similar situation.