The Green Party politician has discovered via documents obtained under a Freedom of Information (FoI) request that officers have been tracking her political movements since 2001.

She said the practice was "an absolute waste of time" and "ludicrous"

 "When I got my file I was absolutely shocked to find it was three pages of essentially gossip and reporting on speeches I had made or tweets that I had made," said Jenny Jones, who is also a former London mayoral candidate.

"At a time when they are finding it difficult to keep officers on the street, the fact they have got me on a database and they are keeping it up to date is ludicrous."

Included in the FoI-obtained documents are Baroness Jones's speaking engagements at police violence protests, a Stop the War rally in 2007 and a protest against the growing of genetically modified wheat crops in 2012.

The Met Police claimed the force could not comment on individual cases.

The Green Party has released a tongue in cheek infographic on Twitter (see below).