Catfishman
The Mobility element will remain in payment.
You need to notify the DWP within one month of his going into a Care Home, you need to do this in writing and I strongly recommend that you use a tracked post so that you have proof of delivery.
To be clear, although it may not actually be relevant, it is entitlement to payment of the Care component that stops, not the award itself,
Gordon
Nothing on this board constitutes legal advice - always consult a professional about specific problems