Paragraph 602 of the Code of Conduct of the English Bar states:
A self-employed barrister must comply with the ‘Cab-rank rule’ and accordingly except only as otherwise provided in paragraphs 603 604 605 and 606 he must in any field in which he professes to practise in relation to work appropriate to his experience and seniority and irrespective of whether his client is paying privately or is publicly funded:
(a) accept any brief to appear before a Court in which he professes to practise;
(b) accept any instructions;
(c) act for any person on whose behalf he is instructed;
and do so irrespective of(i) the party on whose behalf he is instructed(ii) the nature of the case and
In the absence of such a rule it may be difficult for an unpopular person to obtain legal representation, and barristers who act for unpopular persons may be criticised for doing so.
In 1999, Lord Irvine (then Lord Chancellor) said: "The "cab rank" rule is one of the glories of the Bar. It underscores that every member of the Bar is obliged, without fear or favour, to represent clients who offer themselves, regardless of how unpopular they may be in the community or elsewhere."