Conservative plans to curb core public sector strikes
The Conservatives say they will change the law to make it more difficult for unions to call strikes involving key public services if they win this year's general election.
Under the plans, a strike affecting health, transport, fire services or schools would need the backing of 40% of eligible union members.
Unions have reacted angrily to the pledge, describing it as a "democratic outrage".
Chris Mason reports.
11 Jan 2015