Informing ESA about PIP?

Hi Frank,
Firstly well done on your fantastic news!
If you receive income based ESA, live alone (or without any other adults) and have no one who claims Carers Allowance, then you may be eligible to claim severe disability premium by virtue of receiving a Daily Living component of PIP. On this basis you may want to tell DWP about this to claim your SDP.
Alternatively, if you have someone who has been caring for you, at least 35 hrs per week, earns less than £128 per week, this carer will be able to claim Carer’s Allowance for looking after you. This can be a new claim, but if it has been ongoing it can be backdated to start if PIPaward or a date after then if later.
You can't claim SDP if someone gets carer's allowance for caring for you.
However, even if SDP can't be claimed, I would still tell DWP. As you are already on support group rate this won't get increased, but you can't rely on one department of DWP informing the other, and it might just mean that an ESA review is later by virtue of the PIP award.
If you receive Housing Benefit or Council Tax Reduction, it is worthwhile informing the local authority in case your PIP award gives you any extra allowance for these benefits.
I hope this helps.
LL26