What are the grounds for recall?

UK Public General Acts, Recall of MPs Act 2015, accessed 26 January 2021

1. How an MP becomes subject to a recall petition process

(1) An MP becomes subject to a recall petition process if—

(a) the first, second or third recall condition has been met in relation to the MP, and

(b) the Speaker gives notice of that fact under section 5. […]

(3) The first recall condition is that—

(a) the MP has, after becoming an MP, been convicted in the United Kingdom of an offence and sentenced or ordered to be imprisoned or detained, and

(b) the appeal period expires without the conviction, sentence or order having being overturned on appeal. Sections 2 to 4 contain more about the first recall condition.

(4) The second recall condition is that, following on from a report from the Committee on Standards in relation to the MP, the House of Commons orders the suspension of the MP from the service of the House for a specified period of the requisite length. [...]

(9) The third recall condition is that—

(a) the MP has, after becoming an MP, been convicted of an offence under section 10 of the Parliamentary Standards Act 2009 (offence of providing false or misleading information for allowances claims), and

(b) the appeal period expires without the conviction having been overturned on appeal. Sections 2 to 4 contain more about the third recall condition.