Who? David Greene, senior partner and head of group action litigation at Edwin Coe, London.

Why is he in the news? Greene is representing London hairdresser Deir Dos Santos, one of the claimants seeking a judicial review of the government’s decision to formally trigger Brexit without parliament’s authorisation. The three-day hearing at the High Court is due to conclude today.

Thoughts on the case: ‘This case raises passions. All those involved for the claimants have been the recipients of those passions. This is an argument about the rule of law and parliamentary democracy. It’s not an argument about whether we should remain in or leave the EU. It’s a constitutional argument about the state of the constitution of the UK and the relative powers of the executive and parliament.’

Dealing with the media: ‘The media tend to send out a message about the case that reflects their political opinion rather than reality. The important point is to ensure what the case is actually about gains some public air as opposed to the way in which the case has been described by politicians, including Theresa May, as “anti-democratic”.’

Why become a lawyer? ‘It’s so long ago I’ve forgotten. It looked fun and it has been.’

Career high: ‘I have been doing class actions for almost 30 years on behalf of individuals (cases include the 1988 Lockerbie bombing, Railtrack, Northern Rock, Hillsborough and Madoff) – we act for the “grannies” as the government called our [Railtrack] clients;  it’s good to ensure they can enforce their rights and gain access to justice.’

Career low: ‘Some lows have been associated with the “reply all” and “autofill” buttons, which are the work of the devil.’