1, 4, 23 and 30 are livery companies (33/22). They are found in The 21 and 2 (the singular of a fifth unclued light). 18 is partly thematic (DYERS), 3 was a high officer, while 7 and 28 show status.
First prize Elizabeth Hardcastle, York
Runners-up Angus Ross, Old Portsmouth, Hants; Tim Hanks, Douglas, Isle of Man