During the 1980’s workshop machinery and tools bearing the Sears name were imported into the UK. Presumably ride-on mowers were imported in the same decade and beyond. 

Known UK models include the GT16 and the LT1035. There is also a known Sears Suburban 12 in orange and white with clam-shell fenders that was imported into the UK (2018).

Also see: Roper

Also see: Allen Roper