Can the houses of lords overrule their own decisions?

Yes, the House of Lords can overrule its own decisions, primarily through the process of judicial review or by re-examining cases. The House of Lords, as the highest court in the UK until the establishment of the Supreme Court in 2009, had the ability to change its legal interpretations. However, following the creation of the Supreme Court, the House of Lords no longer serves as a court, and its previous decisions can now only be overruled by the Supreme Court or by new legislation.