Then peers turn to the committee-stage discussion of the Mental Health (Discrimination) (No. 2) Bill - this is the private member's bill pushed through the Commons by the Conservative Gavin Barwell, to abolish various forms of legal discrimination against people who have, or who have had mental health problems - which may prevent them serving as company directors, jurors or even MPs.
All legislation has to be approved in identical form by both Houses of Parliament and where a bill is changed by one, those changes are sent to the other for approval - if there is no agreement, the bill bounces between them, in so-called parliamentary ping-pong.