Former Pakistani cricketer and politician Imran Khan has tweeted of his shock and sadness following the death of Mark Shand:
Shocked & saddened to learn of the death of one of my closest English friends',Mark Shand, in New York where he was raising funds 4 charity.
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The world's first ever 'hole in the wall' was installed in Enfield, north London, on June 27 1967.