Jarrod Bowen and Crysencio Summerville put the Hammers in control, but goals from Joao Pedro, Marc Cucurella and Enzo Fernandez snatched the points.

Chelsea looked safe with an early lead given to them by Enzo Fernandez’s penalty.

Joao Pedro showed lightening-quick thinking to net when a ricochet fell his way before a penalty from Cole Palmer doubled their score.

Goals at the start of each half earned Brighton a fourth victory from their last six Premier League matches.