How To Get A Copy Of A Will Through A Parish Register

How can I get a copy of a Will?

There is now a principle probate registry since January 1858, which has got a complete record of all wills that have been proved throughout England and Wales. And Scotland has a similar registry as well. But before 1858 there was a myriad of local church courts each of which had rights to grant wills depending on where an individual lived at time of death.