You guys will be aware that these laws are being modified all the time? That means that if you look up an Act dated 5 years or more ago it is quite likely to have been amended by a subsequent Act of Statutory instrument which will effectively add and delete words and often whole paragraphs.
There is at least one website that unofficially tries to keep up with all the amendments and where you can view/download the Acts you are interested in with the amendments shown as annotations in red - here is a sample:-
Employment Rights Act 1996