Enough moaning, let's embrace the greatest show on Earth, says Lord Coe Lord Coe admitted that putting on the Olympics was a "very tough project" that would challenge any city, but he stressed that the Games were "not a security event with a little bit of sporting overlay." "The world's greatest athletes are arriving for London 2012, and I encourage everyone to get behind the Games and enjoy this moment in our history," he said. The final build-up to Friday's opening ceremony starts today after the Olympic torch arrived in London last night for the conclusion of its 70-day, 8,000-mile journey around the country, which has attracted 10 million supporters. Royal Marine Commando Martyn Williams abseiled 180ft from a Royal Navy Sea King helicopter into the Tower of London with the flame, where it was kept overnight locked in the vaults with the Olympic medals. Today, the torch will be transported from Greenwich Park in south London via the Cutty Sark, where it will be carried by Sir Robin Knox-Johnston, the first person to sail solo non-stop around the world, to Waltham Forest in east London. The relay will pass through every London borough, led by torch-bearers including Stephen Lawrence's mother, Doreen, and Daley Thompson, the double Olympic decathlon champion. Finally, the flame will be used to light the cauldron in the Olympic Park in Stratford, east London, at the opening ceremony, which is expected to be watched by a worldwide television audience of one billion. The Queen and the Duke of Edinburgh will host a Buckingham Palace reception for members of the IOC on Monday. That evening, the Princess Royal, who is president of the British Olympic Association, will attend the opening ceremony of the 124th IOC session at the Royal Opera House in Covent Garden. After arriving in Britain yesterday, Mr Rogge spoke of his confidence in the seven years of hard work by Lord Coe's team. "I believe these will be great Games," he said. Preparation, in spite of some difficulties, has been very sound. All the bases have been covered, so I am very optimistic. This is the country that invented modern sport. Shops will receive a £90 million boost from the lifting of Sunday trading laws for larger stores during the Olympics and Paralympics. George Osborne, the Chancellor, said: "Some of the biggest events will be on a Sunday, and when millions of visitors come to Britain to see them, we don't want to hang up a 'Closed for Business" sign."