The UK data centre we use has ISO 27001 certification which demonstrates that the data centre protects the confidentiality, integrity and availability of all the information within its organisation. This includes your information.
We develop our web apps with the assumption that they will be targeted by hackers and therefore we make sure that apps are coded in a way that protects them from hacking attempts (e.g. SQL Injection, Cross-Site Scripting, Cookie/Session manipulation, etc.). We keep abreast of current hacking trends and engage in "white hat" hacking attempts and "penetration testing" of our apps to help keep them secure.
Where requested by the customer we will make sure that all data captured and stored on the apps we develop is encrypted with the strongest cryptography currently available to allow secure encoding and decoding of data.