Wow that's even more complicated than doing it from here. Until very recently (for selected accounts) we have had to change the money to Euros first before sending to Coinbase. They had no GBP wallet. I can see the GBP wallet in my account now but I'm not yet able to send money to it directly. Soon I hope.
Yeah I'll admit it took longer and was more complicated than I expected. Not only that, there really seemed to be limited information on how to do this, haha. So I thought a great chance to hopefully help others perhaps.