Member of Parliament in the United Kingdom
MacInnes was the son of General John MacInnes and his wife Ann Sophia Reynolds. His father left Scotland to seek his fortune in the East as an officer of the East India Company and retired to Fern Lodge, Hampstead after a successful military career.
Miles was educated at Rugby School and at Balliol College, Oxford.
Because he was related to George Head Head"s wife he was given a job at Head"s bank in Carlisle when he was 23. He worked at that bank until 1864 when the bank was merged with another and became a trader in corn in London. He was a Director of the London and North Western Railway and Justice of the Peace for Cumberland and Middlesex.
In 1876 MacInnes acquired Rickerby Park at Carlisle.
MacInnes was left £160,000 and the estate on the understanding that he would use Head"s coat of arms and to use the surname "Head". Macinness did not take on the surname.
However his opponent"s election was declared void, and he regained the seat in 1893, to lose it in 1895. MacInnes married Euphemia Johnston of Holton Hall, Suffolk in 1859.
When he died in 1909 he was buried at Stanwix near the tomb of his benefactor.
A steam George V class railway engine was named in his honour by the LNWR.
23rd United Kingdom Parliament. 24th United Kingdom Parliament. 25th United Kingdom Parliament]
In 1885 MacInnes was elected Member of Parliament for Hexham and held the seat until 1892.
