Oxford Circus Closed For F1 Race

The usual cock up from London Underground was lack of notice of the closure of Oxford Circus tube station today.

I suppose common sense should of told me it would be shut due to the Formula One racing down Regent Street later.

However, being so used to queuing there due to overcrowding I just waited outside for 15 minutes, gradually moving forward as the people ahead gave up. Once at the front, a sign just below ground level said it was closed, and a member of staff said when asked that it would be shut for at least an hour, if not more.

Why doesn't London Underground advertise closures like this? It's known of it for a while, and no posters were up there this morning about it Also, why aren't the closure signs above ground level, so people further back can see and know not to bother waiting?

Oxford Street is a nightmare to move down and the bus i've managed to get on isn't moving due to crowds in the road.