R (Daly) v Secretary of State for the Home Department [2001] UKHL 26 is a UK constitutional law case of the House of Lords case on the rights of a prisoner when his cell is searched by prison officers.

The case concerned whether cell searches contravened a prisoner's right to private correspondence with his solicitor. The case is of importance for its use of a proportionality test in a judicial review case, a method copied from the jurisprudence of the European Convention on Human Rights.

The prisoner's case was accepted.

• Helen Fenwick and Gavin Phillipson, "Text, cases & materials on public law & human rights" (2 rev ed), Routledge Cavendish, 2003, ISBN 1-85941-655-1

• House of Lords judgment