Answer the following question: Facts: - death place: bradford , yorkshire , england , uk - birth name: john colin smith - yearsactive: 1961-1983 - death date: 25 february 1987 - birth date: 18 october 1928 - name: john collin - birth place: burley england , uk in wharfedale , west riding of yorkshire , - occupation: actor Based on these bullet points, write a short biography describing the life of john collin -lrb- actor -rrb- .
Answer:
john collin -lrb- 18 october 1928 -- 25 february 1987 -rrb- was a british actor frequently seen on uk television during the 1960s and 1970s , mainly in supporting roles .collin 's best-known role was as detective sergeant haggar in the long running bbc police series '' z-cars '' .another notable role was as guardian officer tom weston in the 1971 itv political fantasy '' the guardians '' .he also played mr. alderson , the father-in-law of james herriot , in the television series '' all creatures great and small '' .