Kevin - PG 2 explains how to apply to register a property for the first time where the deeds have been lost -
Practice guide 2: first registration of title if deeds are lost or destroyed - GOV.UK
If you are buying with a mortgage and through probate then your lender may insist that the seller registers first
And if they don't any conveyancer you use may also insist
If a first registration is submitted before you complete then a request to expedite should be submitted after the application itself -
Request an expedite - GOV.UK
Land registration is complex, designed to protect legal and financial interests in property. There can be significant consequences for any error. Please consider seeking legal representation. Before making an application without legal representation, it is important to
consider the benefits of using a conveyancer.