Verified coinbase account with verified UK bank account
- Send your ETN to Kucoin
- Go to BTC market and sell ETN for BTC
- Sell BTC for BCH
- Withdraw BCH from Kucoin to your coinbase BCH wallet
- Sell BCH on coinbase for GBP
- Withdraw GBP to your UK bank account. It will say it takes 3 working days, but it will show in major banks in about 20 minutes.
You can skip the step that swaps BTC for BCH, but you will pay higher transaction fees and it will take longer to withdraw if you work with BTC.