Europe
Eurosceptics present a bleak view of the UK's future, while the foreign secretary considers a new supranational European body.

The Cabinet
In the fifth programme in the series, Donald Macintyre examines the powers of the cabinet in an era when the prime minister seems all powerful.

The Town Hall
The government wants a new relationship between local government and the people. Matrix of Power examines the proposals.

Lords Reform
The government is to get rid of hereditary peers. The fourth programme in the series looks at last-ditch opposition and hints about a new method of nominating life peers.

Treasury
Matthew d'Ancona examines the role of a department whose power seems to be growing to rival that of the prime minister's.

Parliaments
The second of BBC Radio 4's ' Matrix of Power' series examines what could be the most radical of the government's constitutional reforms - devolved assemblies.

Number 10
Michael White, the political editor of the Guardian, finds out whether Tony Blair really is concentrating power at the centre.