1800 jobs will be cut in shipyards operated by BAE Systems across England and Wales, bringing shipbuilding in Portsmouth to an end.
Unions are to meet defence giant BAe Systems to discuss the future of the firm's three shipyards amid a review of its business.
Work has begun in Portsmouth on a key section of a new aircraft carrier.
Mike Hancock, the MP for Portsmouth South, was at the city's rally today. He was there to support demonstrators hoping to save 940 BAE jobs. The cuts were announced earlier this week.
Scores of Portsmouth residents turned out to back a rally in support of saving the city's dockyard and the 940 BAE jobs there currently at risk.
The firm made an announcement earlier this week that it would begin closing the site next year. The proposal would see the end of centuries of shipbuilding in the city.
A Facebook page calling for BAE Systems jobs in Portsmouth to be saved has got more than 60,000 'likes' within days of being set up. The plans to cut 940 jobs in the city will end five centuries of shipbuilding from next year.
Work on the new £800 million aircraft carriers will move to Scotland, but the ships will be based in Portsmouth, with workers maintaining them. You can see the Facebook page here.
Unions have vowed to fight plans to cut hundreds of jobs in Portsmouth.
They will meet with senior executives from BAE Systems next week to discuss the loss of 940 jobs at the Portsmouth ship yard.
Shipbuilding will cease in the city from 2014.
Overall, 1,775 jobs will go at BAE Systems in Scotland and Portsmouth.
Today's announcement that hundreds of jobs will be lost at BAE in Portsmouth ends centuries of tradition in the city and the careers of hundreds of workers.
From the earliest records - ship building features as an important part of life in the city. Henry the Eighth granted Portsmouth the official status of Naval Dockyard. Kerry Swain has been looking back.
Tom Savvides looks at the revival of Chatham dockyard as shipbuilding ends in Portsmouth.
Tom speaks to former engineer Phillip Lewing, Bill Ferris from Chatham Historic Dockyard and councillor Jane Chitty from Medway Council.
The Bishop of Portsmouth said the loss of 940 jobs at Portsmouth dockyard is shocking news.
BAE Systems announced earlier that shipbuilding would cease in the city from 2014.
The Rt Rev Christopher Foster, Anglican Bishop of Portsmouth, said: "This is serious and shocking news for Portsmouth and the surrounding area.
"Most of all for those whose jobs are directly now at risk and their families but for the whole community and local economy.
"The decision of BAE and the Government will not be understood by most of us and does no justice to the commitment of this city and area to our island and naval safety for generations."
John Denham, Labour MP for Southampton Itchen and Rowenna Davis, Parliamentary candidate for Southampton Itchen have spoken out about the news of shipbuilding job losses in Portsmouth.
– John Denham, Labour MP for Southampton Itchen
Labour secured ship building on the south coast with shares of the destroyer and carrier programmes. Government statement today made clear that no efforts have been made to win new work for Portsmouth in the past three years and that they have agreed to transfer work from Portsmouth to other shipyards. Many on the south coast feel they have been sold down the river by a government whose interest and attention has been elsewhere.
– Rowenna Davis, Labour Parliamentary candidate for Southampton Itchen
The end of shipbuilding in Portsmouth is a great loss for the 1200 workers there, and for our country as a whole. Our thoughts are with employees and their families as this great 500 year tradition and all their hard work comes to an end. Labour worked hard to secure shipbuilding in the South of England, whilst this government has done nothing, following the same path as Ford earlier this year. Now our Royal Navy may be forced to commission work abroad or from a potentially independent Scotland. We should be protecting and supporting our skilled jobs, not letting them slip away.