This paper is concerned with the existence or otherwise of conscious politi
cal interference with judicial decision taking. We produce new evidence fro
m the English Court of Appeal to shed some light on the theoretical debate
on judicial independence. This evidence rests on the fact that the procedur
e for promoting judges from the Court of Appeal to the House of Lords is in
principle under political control: the lord chancellor, who has a key role
in the promotion of judges, is a member of the cabinet and as such a polit
ical appointee. The data relate to public law decisions made by judges in t
he Court of Appeal over the period 1951-86. We use a competing risks surviv
al model to establish whether the record of individual judges in deciding f
or or against the government was a factor that determined their promotion c
hances, controlling for the quality of their decision making.