Unions have called the news that Tata is cutting 900 jobs "devastating" and said it capped off a "dark" week for the UK economy.
The news follows announcements of further potential and real job losses at Vion, Premier Foods, Standard Life, Comet and Newcastle City Council.
Unite general secretary Len McCluskey said: "Today's news at Tata rounds off a dark seven days for the UK economy."
Michael Leahy, general secretary of the Community trade union, said he was seeking an "urgent meeting with the company to ensure our principle of no compulsory redundancies is upheld".
More top news
The Duke of Cambridge has condemned the "violent and apparently targeted murder" of the head of a wildlife conservation foundation.
Experts are warning that millions of middle-aged people are putting their health at risk due to a severe lack of exercise.
Teenagers across Wales, Northern Ireland and England are to get their results, with much of the focus on the effect of reforms in England.