Ben k

Hello, I have a few questions I just wanted to know if you could hypothetically place £20,000 into a cash Isa this tax year and then next year if you wanted to transfer it into a stocks and shares isa (a stocks and shares isa that you already have but with a different provider), could you do that without impacting your allowance, therefore if you transferred that £20,000 and wanted to add another £20,000 would that be fine and untaxable? Also, if you were to put in the £20,000 into the cash isa, can you remove the interest that is accrued without impacting your yearly allowance?