When you are running a simple web site, you can probably get away with having it hosted by one of many different hosting companies without having to worry about it being bothered or hacked into. However, when you are running a corporate site or a retail site, you need to make sure you have it hosted on a UK VPN or virtual private network that provide you with a section of one of their servers that is restricted to just your web site.
By adding in the security of a UK VPN such as those available through Digi-Sign, you will be able to decide on the level of security that your site will have. If you are looking for the ultimate in security, you can use a two factor authentication system that requires the use of an RSA token in order for a user to be granted access to your database and make any changes, additions or subtractions. This way you and your employees can access the database from anywhere without having to worry about anyone hacking your site.