You will need to pay two separate fees at the Barclays share dealing platform. The first is an annual 'customer charge', which starts at 0.2% per year. If trading more than £24,000 - this goes down to 0.1%. The minimum annual charge is £48. The second fee is a flat trading charge. This works out at £3 per trade (both buy and sell orders) if your balance is less than £24,000. If it's more than this you will pay £6 per trade.