Just to breifly go over your points from a customer point of view.
Firstly, I am only aware of eUK staff going into your account / server for maintenance or at your request. In any case, I don't expect that they will do anything (read, copy or otherwise) any data that you have on the server (unless of course you request a backup!).
Secondly, I would advise that sensitive data be encrypted so that no third party (whoever they may be) can get hold of your sensitive data
.