Selling Advice

Hi!

I am definitely not a crypto currency expert, however, I do have a fundamental understanding of it. I'm due to receive a very large sum of money (around £11,000). It's my first time dealing with such a large amount of money that I'm not sure what services, such as Coinbase or whatever will allow me to own that much money, and of course, sell it.

Can somebody advice me on the best way of receiving and selling this amount (please take into consideration the new UK laws around crypto)

P.S I've owned many Coinbase accounts in the past and they've stolen off me in the past...