He was a Member of the European Parliament (MEP) for the East Midlands constituency until the United Kingdom's withdrawal from the EU on 31 January 2020.

[5] Bullock began his career working in the House of Commons for MPs Andrew Stewart and Sir Richard Ottaway.

Subsequently he worked for the Advertising Association (1994–1997) and for the British Road Federation (1997–2001), both in similar head of public relations roles.

[5] For the Conservative Party, Bullock fought the Parliamentary seats of Manchester Gorton (1992) and Gedling (2001) and the 2004 European Parliament election in the East Midlands constituency.

[5] He resigned from UKIP in December 2018 over a breach of the party's constitution by leader Gerard Batten,[5][4] but remained in the Europe of Freedom and Direct Democracy group in the European Parliament.