Speirs’s father, son of an Edinburgh merchant, was a partner in a Glasgow consortium trading in tobacco and sugar and purchased a Renfrewshire estate. Speirs, who had shares in the family business and a cotton mill at Elderslie, was thought in 1788 to have ‘the largest property estate in the county, and can make 15 votes. He is steady in opposition.’ In 1789 he canvassed Renfrew council as part of the opposition campaign in Glasgow Burghs: he was reported as being ‘unfortunately raw, and on the whole a damned bad canvasser—but his wealth and near residence give him much personal goodwill at least’.
Of Speirs, who joined Brooks’s Club on 27 Apr. 1812, it was reported to Lord Grenville in August that year, ‘He is for you’. His votes—for he made no known speech—bore this out, though he may not have been a regular attender without summons.
Speirs retired in 1818 by agreement with the Whig junto in Renfrewshire. He died at Elderslie, 2 Nov. 1832, while dressing to attend a public dinner in his honour. He was then described as ‘the oldest reformer in the kingdom’.
