Unfortunately not, Woofgang.
Let's consider the following scenario:-
Albert dies, leaving his property to Bill for his lifetime and on Bill's death to Christal. Bill is married to Denise. Denise is not mentioned in Albert's Will. Thus when Bill dies, Christal inherits the house and can realistically ask Denise to leave. Denise COULD have claimed from Albert's estate within 6 months of the Grant of Probate IF she fitted one of the classes of Claimants under the Inheritance (Provision for Family and Dependants) Act 1975. Harsh as it sounds, unless a claim was made, Denise has no rights.
Remaindermen are beneficiaries who take the "remainder" of an estate after some form of life interest - often confused with a reversionary interest which is a different thing altogether.