Last updated at 11:27

Pictures: Anniversary Games at Olympic Stadium, London

Check out our gallery of photos from the Anniversary Games in the Olympic Stadium, marking one year on from the London 2012 opening ceremony.
One year on from London 2012's opening ceremony, the Olympic Stadium was filled with 60,000 sport fans once again. This time it was for the Anniversary Games - three days of top athletics from Friday to Sunday.
The Olympic Stadium
Wheelchair racing star David Weir poses with his children. He won four golds at London 2012 and closed the Anniversary Games with victory in the T54 one mile event. The Olympic Stadium will now be closed for refurbishment until 2015.
David Weir
The Jamaican sprinting star didn't disappoint - he powered to victory in the 100m.
Usain Bolt
Great Britain's Dina Asher Smith, Annabelle Lewis, Ashleigh Nelson and Anyika Onuora pose after winning the women's 4x100m relay.
Dina Asher Smith, Annabelle Lewis, Ashleigh Nelson and Anyika Onuora
Check out Perri Shakes-Drayton's funky trainers! She ran a personal best in the 400m hurdles, but still had to settle for second place.
Perri Shakes-Drayton's funky trainers
No prizes for guessing who the crowd are cheering for here on day two, Saturday! Yes, it's the 5,000m and 10,000m Olympic champion Mo Farah!
People doing the Mobot
Mo Farah jumps for joy after cruising to an easy win in the 3,000m race.
Mo Farah
Olympic heptathlon champion Jessica Ennis-Hill competed in two events, despite recent ankle problems. She came fourth in the 100m hurdles but she was last of eight in the long jump.
Jessica Ennis-Hill
He's not shy is he? Usain Bolt arrived on a 'rocket ship' on Friday, day one of the Games.
Usain Bolt
Usain Bolt was on winning form again on Saturday, helping the Racers Track Club from Jamaica win the men's 4x100m relay.
Usain Bolt and Racers Track Club
The long jump event was won by fellow British heptathlete Katarina Johnson-Thompson.
Katarina Johnson-Thompson
Two world records were smashed in the joint category T43/44 100m race. Brazil's Alan Oliveira (left) won in a new T43 record time of 10.57 seconds, while USA's Richard Browne (right) set a new T44 record of 10.75 seconds. GB's Jonnie Peacock (centre) had to settle for third place, although he did set a new British record!
Alan Oliveira, Jonnie Peacock and Richard Browne
On Sunday, the third and final day, it was the turn of Paralympic athletes to return to the Olympic Stadium. Wheelchair racer Hannah Cockroft dominated the T33/34 100m race. She won two golds at London 2012.
Hannah Cockroft
Richard Whitehead made a late surge to win the T42 200m, doing his famous "guns" celebration as he powered over the finish line.
Richard Whitehead
Aled Davies set a new stadium record in the F42 shot put with a throw of 14.31m.
Aled Davies
Christine Ohuruogu of Great Britain is all smiles after winning the 400m in 50 seconds exactly!
Christine Ohuruogu