The son of West Ham co-chairman David Sullivan claims a club board member was spat at as fan violence marred their defeat to Watford on Saturday.

The Hammers surrendered a two-goal lead as they suffered their first Premier League loss at London Stadium, and matters also turned sour off the pitch.

Pictures and video taken from inside the ground appeared to show clashes between rival fans as the line of stewards segregating home and away supporters was breached.

There were also reports of trouble between home fans and stewards as West Ham condemned the behaviour of those involved and promptly ordered a full review of the 'isolated' incidents.

And Dave Sullivan Junior, son of the club's co-chairman, urged fans to report any stewards felt to be falling below the standards expected.

Sullivan Junior tweeted: “We were being verbally abused by our fans whilst stewards stood and did nothing. One board member was even spat on by fans.

"The only way we can improved is by reporting the stewards to stadium ops. And that is exactly what we did yesterday."

The trouble follows similar scenes in last month's Europa League defeat to Astra as West Ham fans were filmed fighting amongst themselves inside London Stadium.