For more 'mobot' videos, click here
Stars (and butchers!) are 'doing the mobot' to raise money for Mo Farah's charity.
Learn the moves and make your own mobot video to be in with a chance of appearing in the official video here
More top news
Officers were given the touching letter at Brixton Station while they were on a reassurance patrol after yesterday's attack
The 52-year-old had previous convictions for violence but was not on the anti-terror watchlist.
In a statement Charlton Athletic said: Keith was a true hero who will be greatly missed by all the Charlton family and everyone at the club.