There are 5 instances of a turret appearing in the OSGB36 list as a type of trig mark  of which 2 are destroyed. Others turrets occur in the list but are classified as Centres. Turrets are classified as Intersected Stations in TP:UK.
|TP9970||Melbourne Terrace Meth Ch Turret||3||1954||SE97|
|TP9082||Munstead Wtr Twr||3||1951||SU77|
|TP8735||Roggiett Ch Turret||4||1951||ST57|
|TP9081||St Michaels Ch Twr Turret||4||1943||NT48|
|TP9218||Viewforth Ch Twr Turret||4||1943||NT48|