collated by @
Rosena Allin-Khan: Wandsworth borough councillor for Bedford ward since 2014; deputy leader of the Labour group; Doctor (emergency room at St George's Hospital). From Tooting.
Naushabah Khan: No relation to the Mayor of London. Candidate for Rochester and Strood in the 2014 byelection and 2015 general election. Medway borough councillor for Gillingham South ward since 2015. Involved with Hope not Hate. From Gillingham.
Mike McLoughlin: junior doctor at St Thomas Hospital. From Tooting.
Jasvir Singh: barrister, specialising in family law. Co-chair of London Faiths Forum. From Tooting.
Martin Smith: National Organiser, GMB. Chairman of the Workers' Beer Company Political Committee. Not known by any Greek letters.
Not shortlisted: Christian Wolmar, Simon Hogg, Walter Smith.