Ahead of Gina Miller’s High Court hearing against Prime Minister Boris Johnson today, here’s a list of all the key individuals involved.

Tom Hickman QC

Claimant: Gina Miller

Law firm: Mishcon de Reya

Partners: Rob Murray and James Libson

Instructing: Blackstone Chambers’ Lord Pannick QC and Tom Hickman QC

Lord Edward Garnier QC

Claimant: Sir John Major

Law firm: Herbert Smith Freehills

Partners: Andrew Lidbetter

Instructing: Lord Edward Garnier QC of 4 Pump Court and Blackstone’s Tom Cleaver

Claimants: Jess Phillips MP and Alex Sobel MP (claim TBD)

Law firm: Edwin Coe

Partner: David Greene

Joanna Ludlam, Baker & McKenzie

Claimant: Lord Advocate to Scotland

Law firm: Baker McKenzie

Partner: Joanna Ludlam

Instructing: Alan Maclean QC of Blackstone

Defendant: UK Government’s legal team

Instructing: Landmark’s David Blundell and Blackstone’s James Eadie QC

The three judges will be: Lord Chief Justice of E&W (Lord Burnett of Maldon), Master of the Rolls (Sir Terence Etherton) and President of Queen’s Bench Division (Dame Victoria Sharp).