He began a new novel, "The Long Book", which he did not finish. Much of his sporadic work of the 1960s was collected as "The Sigma Portfolio". In March 1966 the "Internationale Situationniste," issue number 10, announced "Upon the appearance in London of the first publications of the 'Project Sigma' initiated by Alexander Trocchi, it was mutually agreed that the SI could not involve itself in such a loose cultural venture... It is therefore no longer as a member of the SI that our friend Alexander Trocchi has since developed an activity of which we fully approve of several aspects." He continued writing but published little. He opened a small book store near his Kensington home. He was known in Notting Hill as "Scots Alec".