6% interest rate on a current account seems pretty good at this time, and you get £50 quidco! was doing a comparison and A&L beats everyone!
The premier 21 account seems great for a teenager, has 6% aer, but the bad thing is:
Earn 6.00% AER (fixed for one year) on balances up to £1,000. After one year the rate goes back to Bank of England base rate less 1%. Balances over £1,000 earn 0.10% AER (variable).