The Olympic Park in Stratford has closed to visitors as the site is prepared for the start of the Games in a few weeks.
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The iconic Cold War jet is due to be grounded later this year on safety grounds.
Yousaf Khan and Xavier Christopher took their young victim to a secluded alleyway in Northholt where they also urinated on him.
After a wet and windy start to the week, conditions will gradually improve, with temperatures creeping up, and up.