This is a great topic and it's also something I collect. Most of the examples I've got in my collection have already been shown, but I've found a few that haven't!
This miniature sheet was issued in February 2022 to celebrate the stamp designs of David Gentleman. Born in 1930, this artist has designed over 100 British stamps and is responsible more than anyone else for the changes to UK stamp design since the mid-1960s, when postmaster Tony Benn decided to expand the range of new issues and also to reduce the Queen's head to a mere silhouette (Benn originally wanted to remove it altogether).
The sheet shows an apparently random selection of Gentleman's stamps - many collectors have queried the selection and think more colorful stamps could have been chosen:

Enlangements of the individual stamps..

1962 National Productivity Year 3d (SG #632)

1965 Battle of Britain 25th anniversary 4d (SG #671)

1966 Battle of Hastings 900th anniversary 6d (SG #270)

1969 British Ships - Elizabethan Galleon 9d (SG #779)

1973 Tree Planting Year - The Oak 9p (SG #922)

1976 Social Reformers - Thomas Hepburn 8½p (SG #1001)
Those who are interested can download an interesting PDF leaflet about David Gentleman and his stamp designs here:
https://wharferj.files.wordpress.co...an-album.pdf