In the Oxo adverts, MacKichan played the oldest son of the Oxo Family, starring alongside Michael Redfern and Lynda Bellingham who played his parents.
He has appeared in numerous television dramas and comedies as policemen over the years, namely The Young Detectives, Crossroads, The Offence, And Mother Makes Five, George & Mildred, Robin's Nest, The Young Ones, Filthy, Rich and Catflap, Boon and Fool's Gold: The Story of the Brink's-Mat Robbery
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With Ronnie Barker in Open All Hours, Porridge and The Two Ronnies 1982 Christmas Special playing the barman in the famous drink ordering sketch.
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His other comedy appearances include roles in Man About the House with Richard O'Sullivan, Bless This House with Sid James and Some Mothers Do 'Ave 'Em with Michael Crawford.
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