@titusrider, my understanding is you will probably get sent a tax return, in which case you need to fill it in. This is because the tax man will want to make sure things like interest income you may receive is properly taxed.
Personally I think ISAs are a bit of waste time, certainly at the moment when interest rates are close to zero. Why lock you’re money up for longer for such a tiny tax benefit.
I do think you should look at your pension arrangements, the full tax relief of 40% is worth having.
Also if you give money to charity make sure it’s gift aided as a higher rat tax payer, the charity can get the extra.
I can tell you of a few stories where people put savings/assets in their GFs/wives/kids name for tax reasons only to find they basically ran off with the money. Again, IMO it’s not worth the risk for the small absolute savings.