He was Member of Parliament (MP) for Plymouth from 1812 from 1818 and served as Private Secretary to the Sovereign from 1817 to 1822 before becoming Commanding Officer of Woolwich Garrison in 1826.

After seeing action at the Battle of Vinegar Hill in June 1798 during the Irish Rebellion, he served in Newfoundland, Gibraltar, and at Brighton in 1806, where, as a brevet major, he was in charge of a troop of the Royal Horse Artillery.

Promoted to major-general on 4 June 1814, he served as Member of Parliament (MP) for Plymouth from 1812 from 1818[3] and was made a Privy Councillor on 19 July 1817.

[4] He was an Aide-de-Camp, then Chief Equerry and Clerk Marshal to the Prince of Wales and finally was Private Secretary to the King, Keeper of the Privy Purse, and Receiver of the Duchy of Cornwall from 1817 to 1822.

There was even a rumour that some of Lady Conyngham's jewels belonged to the Crown, a fact known by Bloomfield, and therefore the royal mistress felt compelled to have him removed.

In an act of desperation he began to lobby Parliament, claiming 'royal betrayal', however, this was ineffective as Lady Conyngham's family were attached to Bloomfield's target audience- the Whig opposition- and therefore his pleas fell on deaf ears.

The King wrote to Lord Liverpool, asking for the post of Private Secretary to be abolished to make Bloomfield's departure appear to be a matter of politics rather than the Crown.

Bloomfield pragmatically refused the position of Governor of Ceylon, but accepted the Order of the Bath, a sinecure worth £650 per annum and the Governorship of Fort Charles in Jamaica,[9] that he would later exchange for the post of Minister at Stockholm, where he served from 1823 to 1832.