The Opposition is leading a debate on the conflict and humanitarian situation in Yemen. Peers are debating the Policing and Crime Bill.
MEPs debate last week's EU summit, relations with Belarus and Afghanistan, and take an initial position on next year's EU budget.
MSPs will participate in a debate entitled 'Support for Campbeltown Airport as SpacePort'
The Public Accounts Committee quizzes officials about the 'failed' Renewable Heat Incentive scheme
Plenary notes the 50th Anniversary of the Aberfan Disaster, before proceeding with finance questions. There are also debates on the UK Government's Wales Bill, local government and on a youth parliament.
Some big-name MPs on all sides are keen to get a place on the newly formed Brexit committee.