Petrina Alexandra Holdsworth (born 1 October 1952), is an English barrister turned politician, formerly National Chairman of the UK Independence Party (UKIP).
She went on to serve as a Principal Crown Prosecutor with the CPS, and then returned to private practice in London specialising in Crime and Industrial Tribunal work.
In October 2005, Holdsworth resigned from the party Chairmanship and NEC; she agreed to return a day later after undertakings were given by the then leader Roger Knapman in relation to the behaviour of one of UKIP's MEPs.
[citation needed] In May 2006, Holdsworth announced her intention to run for leader of UKIP, but later withdrew her candidacy due to her husband's ill health.
In the 2009 European Parliament Elections she ran as lead candidate in South East England for the newly formed United Kingdom First Party, whose leader was Robin Page.