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The 1970 Embassy British Indoor Championships was a combined men's and women's Grand Prixtennis tournament played on indoor carpet courts. It was the 3rd edition of the British Indoor Championships in the Open era. The tournament took place at the Wembley Arena in London in England and ran from 16 November until 21 November 1970.
The men's singles event and the $7,200 first prize was won by first–seeded Rod Laver while Billie Jean King won the women's singles title.