Complex sentence: Cryer was Chairman for the Oxford Union debating team (1975), joined TVNZ in 1977 as producer and for the next ten years produced University Challenge NZ and Mastermind NZ, (including Mastermind International for the BBC).
Split into simpler sentences: Cryer was chairman for the Oxford Union debating team (1975). He joined TVNZ in 1977 as producer and for the next ten years produced University Challenge NZ and Mastermind NZ, (including Mastermind International for the BBC).