LIVE BLOG: London 2012 Olympics: seven days to go - Coe defends Olympic sponsorship rules and Games Lanes • Olympic torch to abseil from helicopter into Tower of London • Boris Johnson: 'Stop whining' Paul Owen guardian.co.uk, Friday 20 July 2012 04.16 EDT (THE GUARDIAN)

LONDON 2012 LIVE BLOG

Downing Street

Keep up in real time with the events leading up to the 2012 Olympics.

Here is a summary of today’s key events
• On a tour of the Olympic Park’s security centre this morning, Theresa May, the home secretary, said G4S had told the Home Office last month that it would be able to resolve its problems supplying enough security guards. Charles Farr, the head of security and counter-terrorism at the Home Office, suggested the military’s expanded role in the Olympics means the Games may now be more secure. Credit ratings agency Standard & Poor's put G4S on alert for a possible downgrade, warning its Olympic failings could result in the group losing out on future work.

• Andy Murray has said that playing at Wimbledon again only three weeks after losing in the final to Roger Federer will be the best remedy for that loss. "I think it was good for me the Olympics came so soon after Wimbledon; that gave me an extra push and extra motivation to get back on court and not think too much about [the Wimbledon final]," he said. "I feel fine just now. I've been practising now for a week. If the Olympics wasn't here I would have taken two or three weeks off, but I just took four or five days off and got back on the court. I'm hitting the ball well, been playing well in practice, but we'll have to see once I get back out on the court how I'm going to feel exactly. But I would expect that by now I'm experienced enough and had enough tough losses to be able to deal with the final.”

• Confusion surrounds Lord Coe’s comments about whether or not Olympic spectators could wear Pepsi T-shirts or Nike trainers to the Games, given that those brands are rivals to key sponsors. This morning the Locog chief said Pepsi T-shirts would not be allowed, but Nike trainers would “probably” be all right, which I take to mean you “probably” won’t have to walk around barefoot all day if you turn up in Nikes – reassuring. But Locog disagrees with its boss. “As an individual you are free to wear clothing of your choice … of course. Including trainers,” a spokesperson for the organising committee said.

FOLLOW THE BLOG:  http://www.guardian.co.uk/sport/london-2012-olympics-blog/2012/jul/20/london-2012-olympics-seven-days-to-go-live-blog