The People’s Assembly said it expects thousands of protesters will take to the streets on Saturday (April 2) at locations throughout the UK, including Preston.
The demonstrations will be held to highlight those suffering “real hardships” due to the combination of rising fuel and food prices, inflation, and low pay.
Unions have complained that Chancellor Rishi Sunak’s spring statement last week did nothing to allay fears about soaring fuel bills and rising inflation.
Lifting the energy price cap on Friday will create an “impossible choice for many” – to eat or heat, said the campaign group.
A spokesperson for the People’s Assembly said: “Public outrage over the cost of living crisis is growing fast, and our response is gaining momentum.”
In London on Saturday, there will be a protest outside Downing Street, with similar events in Birmingham, Bournemouth, Bristol, Cardiff, Cambridge, Coventry, Derby, Doncaster, Glasgow, Hanley, Hull, Ipswich, Lancaster, Leicester, Liverpool, Manchester, Milton Keynes, Newcastle, Peterborough, Portsmouth, Preston, Redcar, Sheffield, and Southampton.
Preston's protest is set to take place outside the Flag Market in between 11.30am and 1.30pm.
Former Labour leader Jeremy Corbyn, who will be speaking at the London demonstration, said: “With rising fuel, food and energy bills, the soaring cost of living is pushing millions into poverty, and the disgusting treatment of the sacked P&O workers needs urgent action from the Government.
“Demonstrations will be taking place all over the country, with thousands of people coming together to demand redistribution of wealth and power and decent wages for all, as well as justice for P&O workers.”
Laura Pidcock, national secretary of the People’s Assembly, who will be speaking at the Liverpool protest, said: “What people are experiencing is intolerable.
“No matter how patiently we explain that Government inaction over soaring energy and fuel costs and sharply rising food prices is deepening poverty, misery and hunger, it is met with at best indifference and at worst more of the same.
“The truth is they are so wedded to the economic system we have, comfortable with a hands-off approach, that even when markets are obviously failing us, they continue with business as usual.
“We tell them about children going hungry and the Government shrug, politically speaking. Our anger and frustration with them must be directed and organised to build pressure on them.”
The Rail, Maritime and Transport union will hold a demonstration at the Portsmouth Continental Ferry Port on Friday over the P&O sackings.