The Labour leader is facing a probe by the independent Parliamentary Commissioner for Standards Kathryn Stone.
An update on the Parliament Standards website reveals a proper review on two fronts was launched on June 8.
The primary matter under investigation is stated as: “Registration of interests under Category 1 of the Guide to the Rules (Employment and earnings).”
And the second: “Registration of interests under Category 3 of the Guide to the Rules (Gifts, advantages and hospitality from UK sources).”
It comes while the Holborn and St Pancras MP stays under investigation by Durham Police for a separate incident over claims he broke lockdown rules in April 2021.
More to follow…