Cab-rank rule

In English law (and other countries which adopt the rule), the cab-rank rule is the obligation of a barrister to accept any work in a field in which they profess themselves competent to practise, at a court at which they normally appear, and at their usual rates. The rule derives its name from the tradition by which a Hackney carriage driver at the head of a queue of taxicabs is supposed to take the first passenger requesting a ride.