Examples of things that may change how your condition affects you include:
your condition gets better or worse
the level of help you need changes
Report a change as soon as possible. You can call or write to the DWP to tell them about the change, but you must write to them if you’ve changed your name. Once the change is reported, the DWP will write and let you know how it affects your PIP.
You’ll need to include these details when you report a change:
Someone else can call on your behalf but you need to be with them so that you can give permission for them to speak for you.
Telephone: 0345 850 3322
Textphone: 0345 601 6677
Open Monday to Friday 8am to 6pm
Calls to this number can cost up to 12p a minute from a landline, or between 3p and 45p a minute from a mobile (your phone supplier can tell you how much you’ll pay).
The contact address to use is on your original decision letter.
It is a good idea to keep a written record of the fact that you’ve reported the change to the DWP. For example, in case the DWP disagrees that a change has been reported.
If you report the change by phone, you can ask the DWP to send you a written record of the call. If you write to report the change, keep a copy of the letter."