There is absolutely nothing stopping your Uncle from transferring the Deeds to your Dad, provided your Uncle is capable of instructing his Solicitor to do this, and his Solicitor being happy that your Uncle is fully aware of the implications of giving away his property. As I have said, it would be up to your Uncle to instigate this and us Solicitors would be very wary if , for example, your Dad approached a Solicitor and asked him to do the paperwork on behalf of Uncle.
On a side point, as you may know, if the property is gifted, and for whatever reason your Uncle does eventually have to go into a Nursing Home, the state will normally still assess his capital as if the property was still owned by him, if they can prove that he gifted the property to avoid paying home fees.
I hope this assists and sets out the legal position.
Well, provided he gifts the property during his life, it won't of course form part of his Will. However, for Inheritance tax purposes, please note that your Uncle will still be treated as owning the house IF he remains living there after the date of the gift to your Dad. This is because, for Inheritance tax purposes, the gift will be seen as "a gift with a reservation"- which is a gift which is seen by HM Revenue as a scheme to avoid Inheritance tax. Hence, I do not know how much your Uncle's property and estate is worth, but if it is over £325,000, there may be Inheritance tax to pay on his death. If there are not sufficient assets in his Estate to pay the tax, then your Dad would become liable for paying it, I'm afraid.
I hope this clarifies the position.