we do not share your data with anyone and there are many ways to control the visibility and storage life of your data here.
but the internet is a public space and you should always assume your data could be compromised.
be smart with your password, use tor or a vpn, and use pgp for sensitive communications.
There are more and more UK carts here I would just check the reviews on each for up to date and accurate info. If you want to get a few at a time or are demanding with quality get a US import, you can see many are shipping to UK now.