One man who remains unmoved is Sir Trevor Brooking. He sits alone in the directors' seats. Police are moving around the touchline.

We have four minutes left at Huddersfield. The home side have now had 26 shots.

Below are the average positions players have taken up. You can see that Swansea (right) have spent the day camped in their own half.

They have not had a single shot and have had 19% possession.

Image source, .

Martin Fisher
Match of the Day commentator

The mob have won the day.

West Ham co-chairman David Sullivan has finally been persuaded to leave his seat and retreat to the directors' lounge. He's led away by security, jeered all the way by a group of home fans that are paying more attention to him than the action. David Gold follows suit.

Wayne Rooney shoots left, Mat Ryan dives to his right and palms it away.

Shane Duffy fells Dominic Calvert-Lewin.

The Huddersfield shot count is now on 24 as Alfie Mawson concedes a corner. Swansea are under it big time and have been all day given their numerical disadvantage.

A draw here would take both sides to 31 points, probably two wins from safety.

Simon Stone
BBC Sport at the Hawthorns

Kelechi Iheanacho's goal was the trigger for thousands of West Brom fans to leave The Hawthorns.

I am pretty sure, in an ideal world, West Brom would leave Alan Pardew in charge for the remainder of the season.

But with every defeat, it gets harder and harder.

Appointed in November, he has won one Premier League game.

Dave Payn: So West Ham go a goal down and need to concentrate on getting back into the game. Instead of roaring them on some fans run onto the pitch distracting them, and they concede again. You couldn't make it up.

If this game wasn't over, it is now.

What a moment of madness from Anthony Knockaert, who lunges in on Leighton Baines on the touchline. Two feet off the ground with absolutely no need to even make a tackle.

Still, he gets to use the shower in peace.

Pablo Zabaleta has touched the ball 18 times. The cynic in me thinks some of these fans who have made it onto the pitch have seen more of the ball.

Sean Dyche is stood in his technical area. He couldn't care a jot.

His side are going to be just two points behind Arsenal.

Andy Gee: I think the taxpayer should be paying more money to improve the security at the London Stadium.

Aifan Mifsud: Someone explain how 11 fairly talented footballers not being able to play very well has that much to do with the owners

Christopher Davison: That second goal was down to our fans running onto the pitch. Totally destroyed the concentration of the players. Makes you ashamed to be a West Ham fan.

The stewards at West Ham continue to be led a merry dance.

This time a fan makes it all the way into the middle of the pitch carrying what looks like the corner flag.

What on earth is going on?

It would appear a few home fans came to blows in the stands after that second goal. All is not well at West Ham. A sentence you could copy and paste to use again and again in recent seasons.

"Sack the board," the home fans sing.

Huddersfield - still relatively new to the Premier League - have had a whopping 22 shots at goal so far.

That tells you all you need to know about the shape of the game. What is also key is that only three have hit the target.

Aaron Mooy, who has pulled the strings all day, goes off, which is a surprise.

Danny Mills
Former England defender on Final Score

It's too easy. Agbonna doesn't get tight enough. There seems to be a fan on the pitch now. Mark Noble's not happy with it.