I need withdrawal ~ £20-30 one-time via POS trans
only convert fee, no ATM fee
Open a Coinbase/GDAX account and a Revolut account. Sell on GDAX, send EUR to Revolut, convert to GBP and withdraw with the Revolut card. It'll take a long arse time but that's a cheap option for the future too.
Haven't tried coinbase yet but Revolut won't accept Eur transfers from kraken anymore.