When he came to speak at the by-election I asked him why he had declined. "It's quite simple. I see Willie Ross, Tom Fraser, Archie Manuel and Peggy Herbison travelling on the sleeper every Sunday to London and coming back on the same sleeper on Thursday night. I am just married with a child and I'm not prepared to do it. Besides, I think I can be more useful in Scotland than as a Labour backbencher."
On the last remark, Pollock, a genuinely modest man, was mistaken. Unquestionably he would have been a member of the first Wilson government in 1964 and would have risen to have become one of its leading members by the mid- 1970s. He was good-humoured, eloquent, able - and thoroughly decent.
Pollock came from a family of engineering boilermakers, and went to Ayr Academy and then to the Glasgow Technical College. For three years he did National Service with the Royal Engineers, gaining a commission. He told me that he had personally benefited greatly from the confidence he gained in the forces. And throughout his political career, in all the arguments within the party on defence, Pollock constantly reminded us that servicemen had to be treated properly and paid for the job they did in society.
Pollock's time in the British Army of the Rhine in the devastation of immediate post-war Germany made an indelible impression, and he decided that he would do what he could to create international understanding. It was no accident that he was an internationally minded educational leader. From 1980 he was on the executive of the World Confederation of Organisations of the Teaching Profession and chaired its European committee.
After leaving the Army, Pollock went to do a general science degree at Glasgow University. He believed that young men were likely to get far more out of university with some experience of life behind them. In particular, he believed that it was important that young teachers should not simply go from one side of the classroom desk to another but should have some experience of life.
Having been a conspicuously successful science teacher at Mauchline Secondary School, in Ayrshire, he was appointed head teacher of Kilmaurs Secondary School in 1959, at the age of 33. In 1965 he was dramatically promoted to become the rector of Mainholm Academy, a leading traditional Scottish secondary school in Ayr.
In 1974 Pollock was appointed General Secretary of the Scottish teaching union the Educational Institute of Scotland. He was soon after involved in a militant action over the implementation of the Houghton Committee report on teachers' salaries. And he found himself pitted against the Secretary of State for Scotland, Willie Ross, Harold Wilson's "basso profondo" who had been one of his closest political friends. The outcome was a draw.
Ronnie Smith, the present General Secretary of the Educational Institute of Scotland, tells me: "John Pollock was an outstanding General Secretary. He was the architect of the modern EIS, leading it into the mainstream of the Scottish Labour movement." It so happens that Smith as a youngteacher also took part in salary negotiations and told me: "In negotiations Pollock was one of the few people whose eloquence actually made a difference to the outcome of the negotiations."
Another first-hand witness of Pollock's skill was Lord Annan, who chaired the Committee on the Future of Broadcasting in 1974- 77. Noel Annan told me: "Pollock was a stalwart member of that committee. He did not talk too much. When he did talk, he always talked sense. He was greatly respected by the other members and was a man of great weight."
Donald Dewar, the new Opposition chief whip, who occupied key positions in the Scottish Council of the Labour Party in the 1970s, said: "Pollock had an enormous influence on the councils of the Labour Party, particularly on devolution, where he carried real influence." Pollock was passionately committed to devolution and a Scottish assembly.
In forestry, Pollock was one of the first people to argue for a balance between broad-leaf trees and conifers; years before it was a fashionable view. George Holmes, the distinguished silviculturalist and Director General of the Forestry Commission in 1977-86, told me: "John Pollock was asked to do three tours as a board member [of the Forestry Commission], which is unusual. He went out of his way to speak to staff about their problems. We on the board were entirely happy that he should do so because he was a man of total integrity, sound as a rock and an independent thinker."
George Robertson, the shadow Secretary of State for Scotland, worked closely with him. Seeing Pollock at first hand, both during his second term as chairman of the Scottish Labour Party, in 1971, and as a member of the General Council of the Scottish Trades Union Congress, and its chairman in 1981-82, Robertson said John Pollock was a giant of the Scottish Labour and trade-union movement. So he was.
John Denton Pollock, teacher, trade-unionist, politician: born Kilmarnock, Ayrshire 21 April 1926; General Secretary, Educational Institute of Scotland 1975-88; married 1961 Joyce Sharpe (one son, one daughter); died Majorca 22 October 1995.