As long as you can maintain your payments, there won't be a problem. You will obviously have to inform your IP and you may find that you will have to up your payments if you have more disposable income.
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
hello and welcome to the forum,generally when your disposable income goes up your iva payments will follow suit,normally through your yearly income and expenditure reviews.