On the 20th August 1976 a group of workers in a film processing factory in Willesden walked out in protest at their unfair working conditions, low pay and the 'bullying tactics' used by management.
Led by mostly East African Asian women, the Grunwick strike became one of the longest and most important industrial disputes in British history, and changed the way trade unions thought about race and new immigrant communities coming to Britain in the 1970s.
The women became known as the "strikers in saris" and their fight for fair treatment was supported by thousands of trade unionists and campaigners as more than 20,000 people joined them at the picket lines on one of the mass pickets.
But the story of the Grunwick dispute is not just a story about ground-breaking solidarity. It is also the story of a remarkable woman, Jayaben Desai.
The 4ft 10in mother-of-two defiantly led the first walk-out in protest against the humiliation she and other women employees felt at the Grunwick factory.
As she left, the manager shouted at Jayaben and her colleagues to "stop chattering like monkeys in a zoo", and Jayaben replied:
"What you are running here is not a factory, it is a zoo. But in a zoo there are many types of animals. Some are monkeys who dance on your finger-tips, others are lions who can bite your head off. We are the lions, Mr. Manager!"
Jayaben became the leader of the Grunwick Strike and not only stood up for workers'rights with selfless dedication, but with her steadfast resolve, she turned the dispute into a national movement for human rights, inspiring future generations and challenging the way people perceived Asian women.
Now, Jayaben's story is being brought to life for the very first time by Townsend Theatre Productions seeking to relive the strikers' inspirational fight for freedom, equality and human dignity.
Written by Neil Gore, the play will tell the story of the Grunwick dispute through a mixture of stirring song, poetry, movement and dance, and the play will utilise Townsend Production's trademark cast of two actors playing multiple roles.
The role of Jayaben Desai will be played by Medhavi Patel, who is a distant relative of the inspirational leader.
Neil Gore said: "In our work we aim to focus on the lives and contributions of inspirational and vital figures from our social history, often forgotten, who campaigned vigorously to improve the quality of life for everyone. Jayaben Desai is one such figure.
"She tirelessly fought on behalf of immigrant workers against exploitative employment practice; fearlessly faced all the elements of establishment authority; alerted many in the trade union movement to the issues of vulnerability of immigrant workers; and highlighted the fight to maintain basic trade union rights.
"Her resolve and courage should be remembered and celebrated. Also, Grunwick raised many wide-ranging questions about trade unionism, rights in the workplace and dignity at work - themes that still resonate and are relevant today."
We Are Lions, Mr Manager! is supported by Arts Council England and Unite the Union and plays at The Old Court Room, 118 Church Street, as part of Brighton Fringe 2018, until Sunday 13th May. CLICK HERE for tickets.