Minister is first MP of new Parliament investigated by standards watchdog

The probe is thought to relate to Tulip Siddiq’s failure to include rental income from a London property in her register of interests.

Treasury minister Tulip Siddiq has been placed under investigation by the Commons standards watchdog (Yui Mok/PA) (PA Archive)

A Treasury minister is being investigated by Parliament’s standards watchdog, the first such inquiry since the election.

Tulip Siddiq, Economic Secretary to the Treasury and MP for Hampstead and Highgate, is under investigation for the late registration of interests, according to the Parliamentary Standards Commissioner’s website.

The inquiry is thought to relate to Ms Siddiq’s failure to register rental income from a property in London, which a Labour spokesman said was “an administrative oversight” for which she had apologised.

The spokesman said: “Tulip will co-operate fully with the Parliamentary Commissioner on Standards on this matter.”

Ms Siddiq is the first MP of the new Parliament to be placed under investigation by the Standards Commissioner.

But investigations into three former MPs which began during the last Parliament remain open.

Former Conservative MP Bob Stewart is being investigated for failing to declare an interest and an alleged lack of co-operation with the watchdog’s inquiry.

Ex-Tory and Reclaim MP Andrew Bridgen is being investigated over registration of his interests, while former Tory Sir Conor Burns is being investigated for use of information received in confidence.

During the last Parliament, the Standards Commissioner opened more than 100 investigations into MPs, the majority of which were resolved by “rectification” – a procedure that allows MPs to correct minor or inadvertent breaches of Commons rules.