For the Conservatives, Alex Johnstone said "a case may exist" for cutting the limit to deal with the "scourge" of drink-driving, but argued the focus of the police may change as a result.

BBC: Scottish drink-drive limit cut endorsed by MSPs

Mr Johnstone's sideways approach to company biography may well be the shape of the better business books to come.

ECONOMIST: The complex lives of legal persons

Former St Johnstone team-mates Alan Main, Stevie May and Bobby Barr were among those to also pay tribute on Twitter.

BBC: Former footballer Darren Wilcox dies from cancer aged 21