Thousands of public sector workers on strike held a mass rally in Trafalgar Square to protest wage freezes, public cutbacks and other issues.

Across the country more than a million public sector workers, including firefighters, teachers and civil servants, are expected to take industrial action in a row over pay.

The move follows a public sector pay freeze in 2010, and the Coalition Government's introduction of 1% pay cap in 2012 – below the most recent Consumer Price Index inflation rate of 1.5%.

Cameron condemned the strike at Prime Minister Questions on July 9 and pledged to introduce new strike laws, including a minimum turnout threshold on strike ballots, if the Conservative Party is voted into Number 10 at the 2015 General Election.