Approximately 750 jobs will be lost at its Port Talbot-based Strip Products UK business.
In addition, 200 support jobs are to be cut as well as 100 jobs across mills in Trostre, Corby and Hartlepool.
The reductions are due to falls in European steel prices caused by "a flood of cheap imports, particularly from China", Tata said.
Karl Koehler, Chief Executive of Tata Steel's European operations, said: "I know this news will be unsettling for all those affected, but these tough actions are critical in the face of extremely difficult market conditions which are expected to continue for the foreseeable future.
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"We need the European Commission to accelerate its response to unfairly traded imports and increase the robustness of its actions. Not doing so threatens the future of the entire European steel industry. And while we welcome progress on UK energy costs, the Government must take urgent action to increase the competitiveness of the UK for its vital steel sector. This includes lowering business rates and supporting energy efficiency and anti-dumping cases so we can compete fairly."
Last year, the steel firm announced nearly 1,200 jobs were to be axed in Scunthorpe and Lanarkshire.
(LM/CD)
