Huge Collection Uk World Stamps 20000

Huge amount of old stamps from the probate contents of a former big collector they are separated into alrge manila envelopes and marked up. Mainly british, home and colonial, etc, first day covers, mixture of uesd and unused, all loose, many xmas stamps, to be honest i wouldnt know what to look for, just a massive amount of old stamps, 2.5 kgs of them.