Go over to Martin Lewis' MSE site and look at the advice on savings.
Mainly depends on what you want to do with it, and how accessible it needs to be. Usual advice is a mix. You could consider some in any of the following:
A stocks & shares ISA (long term, there will be a lot of ups and downs over the next few years!)
Some 'locked in' to a higher rate savings account in return for keeping it there (pitfall is that rates may rise & leave yours behind)
Some immediately available in an account that offers a higher rate in return for limited withdrawals (rainy day money)
Some immediately available for things like Xmas & holidays, but earning a small amount of interest. I have a 'regular saver' to pay for Xmas.
The idea of a spread is that if any of the accounts don't work out too well, you haven't lost a great deal.
I would, before doing any of that, think about 'future proofing' your home.
This is of course, purely a personal perspective, I have no qualifications in this, but had a mother who taught me well!