Guardian Daily: G20 protests in London

As the world's leaders jet into London for tomorrow's G20 summit, thousands of anti-capitalists and environmental activists are planning protests in the capital. Paul Lewis says it presents an unprecedented challenge for Britain's police and security services.

Columnist Jonathan Freedland looks how Barack Obama will be influencing events at the summit – and what's at stake for Gordon Brown.

A new watchdog takes over today overseeing standards in health and social care across England. The new Care Quality Commission's chief executive is Cynthia Bower, who talks to our social affairs editor John Carvel.

In Northern Ireland, Republican Sinn Féin – a group aligned to the dissident paramilitaries the Continuity IRA – predicted more attacks like last month's killings of two soldiers and a policeman. Josephine Hayden, a former Continuity IRA prisoner, spoke at a press conference to our Ireland correspondent Henry McDonald.

Henry VIII's suits of armour are going on display at the Tower of London. It's one of many exhibitions on Henry taking place this year on the 500th anniversary of his accession to the throne, reports our arts correspondent Mark Brown.