Hi, if you earn more and your expenses don't go up then the contributions can increase.
Sharing from experiences of dealing with debt
The greatness of a man is not in how much wealth he acquires, but in his integrity and his ability to affect those around him positively.
Bob Marley. http://kallis3.blogs.iva.co.uk
But if you are in the last year, you will not have a review at the end, so as long as the payrise is not material, I am not so sure that you would be asked to increase contributions during the last year.