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 many btc atms in the uk use coinatmradar to find them. online try coinhouse.io and buy.bitcoin.com
plenty more to try, dont be shy, but if its not bitcoins you've got the wrong guy :)→