Diamond Geezer sums it up nicely. Many Londoners (including those who pretended it was too difficult to get to work today 😮 ) enjoyed it while it lasted. As did many schoolkids who also had the day off due to teachers who couldn’t make it. Personally, I think the kids deserved to have the day off, as sadly it is a rare occasion of immense educational (and recreational) value.
(Taken with my cameraphone at my local tube station; Kingsbury, NW9. Jubilee Line.)