"The proposed changes are expected to lead to a net loss of 900 jobs in the UK, including 580 in South Wales, 155 in Yorkshire, 120 in the West Midlands and 30 in Teesside," the steel giant said.
The company is proposing to make changes at a number of steel finishing and processing sites in the UK, Tata Steel said in a statement.
CEO of Tata Steel's European operations, Karl Kohler said, "Today's proposals are part of a strategy to transform ourselves into an 'all-weather' steel producer, capable of succeeding in difficult economic conditions.
"Theserestructuring proposals will help make our business more successful and sustainable, but the job losses are regrettable and I know this will be a difficult and unsettling time for the employees and their families affected," he said.
Kohlersaid the company will be working with its trade unions and government at a national and local level to ensure maximum possible assistance and support to them.
"Inaddition, our subsidiary UK Steel Enterprise will be looking at how it can provide more support to local steel communities and stimulate new jobs following today's announcement," he added.
Tata Steel also said it will re-start one of the two blast furnaces in Port Talbot, South Wales, being rebuilt as part of 250 million pound investment in the first quarter of 2013.
Itwill also lead to the restarting of the hot strip mill at the company's Llanwern site in Newport, South Wales.