I too have had a difficult time with PIP. After many months of waiting for assessments etc I finally found out that I had received no points for either care or mobility. After taking advice from a gentleman called ‘Flymo’ on the youreadable forum for disability and benefits I wrote a full description of how my disabilities affected me and what the assessor had probably misunderstood or I had not made clear. I asked for a mandatory reconsideration using the letter as evidence as well as any medical proof I had. I then received 19 points for care and 16 points for mobility giving me the enhanced rate for both.
It is true that if you ask for a mandatory reconsideration they look at the award as a whole and not just the part you disagree with, however it is extremely rare for them to take away those points you have already received as you must have fitted the criteria to have received them but it is possible. The other thing is you must tell them within four weeks of the award. This can be done by phone and then requesting more time to put together your evidence. If the four weeks have already passed then you must have a ‘good’ reason which is quite difficult to prove.
Sorry but you do need the mobility part of the PIP award to automatically renew your blue badge and it must be under the descriptor ‘moving around’ and not the ‘planning a journey’. Eight points [standard rate] in the first descriptor would be enough.
Hope this helps