London commuters have reacted to the 24-hour Piccadilly line strike that has caused travel misery for the capital's workers.

The fourth-busiest line on the London Underground (LU) network is out of action until 9pm on Thursday (March 24) as a result of industrial action by rail union, RMT.

The union members are striking in a dispute with LU management over alleged bullying and harassment of staff.

London's commuters have hit out against the strike which has specifically caused difficulty for passengers getting to Heathrow Airport , which is located on the Piccadilly line.

'Making a stand against bullying'

Speaking during the 24-hour strike, the union boss congratulated members for the “rock-solid” industrial action that disrupted London's transport network.

On Thursday, RMT general secretary Mick Cash said: “RMT congratulates our members for the rock-solid and determined support for today’s action.

“They are making a stand against bullying, the ripping up of procedures and in defence of the safety of staff and passengers alike.

“The blame for this action rests solely with the LU management who have walked away from numerous opportunities to resolve the issues at the heart of this dispute.

"It is time for LU on the Piccadilly Line to end the macho posturing and start talking seriously with our representatives.”

Two more 24-hour Piccadilly line strikes are pencilled in to go-ahead in the space of one week, with one from midnight on Tuesday (April 19) and the other from midnight on Thursday (April 21).

Planning on travelling around London? Make sure to read our Piccadilly line strike travel guide .