info on Bmdr Jack Cumberworth 58 Medium Reg RA

I just wondered if anybody here remembered my Great Grandfarther Bmdr John George Cumberworth (jack) from Workington? he served in 58 Medium Regiment Royal Artillery around 1950-51 not exactly sure of dates. From what I remember him telling me he spent alot of time in Hong Kong and went to Korea and china. The only name that comes to my mind from my memories of him telling me of serving friends was somebody by the name of Butterworth.