More than one million revellers are expected to descend on the capital over the next two days for Europe’s biggest street festival – the Notting Hill Carnival.

Over 200 people were in custody in Britain today after trouble flared following a separate rally where hundreds of thousands protested against the government’s public spending cuts.

Organisers of a huge protest against the UK government’s public spending cuts tonight hailed the demonstration a “fantastic success” after hundreds of thousands of people joined the biggest event of its kind for over 20 years.

A British police chief said today he was not satisfied that officers had sufficient training to deal with events such as the recent G20 protest in London.

Police seized dozens of protesters in raids on two squats today as the hunt for violent G20 anarchists continued.