As you probably already know there has been a major terrorist attack in London on the transport infrastructure which has led to many fatalities. At the time I was on a train North bound from London Kings Cross station (where one of the explosions occurred) when it was announced that a “major incident” had happened and that no trains would not be running back to London. Mobile phones were instantly buzzing with people calling friends and family and obviously there were some worried faces.
Binary Bonsai has a good run-down of the relevant links for up-to-date information. Wikipedia also has a page being constantly updated.
After the jubilation of yesterday it’s a dark day for London.