Except if you claim to be “a friend of the family” of a previous holder of a two-letter pre-war callsign! There are numerous recent examples of this. It used to be necessary to be a close relative of the original holder, but this no longer seems to be a requirement. There are several contest clubs around the UK whose members appear to have made a hobby of collecting reissued two-letter callsigns.
73,
Walt (G3NYY)