gdax can pull from coinbase at No Charge and send crypto to other exchanges or personal wallets at No Charge.
coinbase charges to send crypto to other exchanges or personal wallets.
i had to wait 2 days for a US bank wire to arrive to coinbase, they are backlogged.
no experience with sending from a UK bank, they say they can SEPA ...
https://support.coinbase.com/customer/portal/articles/1963534-payment-methods-for-uk-customers