According to a tweet by Sewing Bee, the sewing show, The Great British Sewing Bee will be shown on BBC1 at 9pm BST, Wednesday 22nd April 2020.
From the screenshot.
Looking as bright as a very well-stitched button, here are the 12 sewers entering the haberdashery. The Great British Sewing Bee. Wednesday 22nd April. 9pm.