Property is circa £250K hence there is no particular concern is respect of inheritance tax.
I have provided some additional information to try and anticipate your questions:
(a) Mothers Mental capacity - No. I have with my sister Power of Attorney
(b) Deeds of house are in joint names (mother and father)
(c) Wills are currently back to back; i.e. mother leaves everything to father and on his death leaves everything to children and vice versa.
(d) I am considering asking my father to modify his will to split his estate amongst the children and effectively bypass my mother to try and protect at least a portion of the house.
Thank you - excellent service