Olympic gold medallist Sir Chris Hoy joked that he had not taken part in today's National Lottery run at the Olympic Stadium because he is "better on wheels than on foot".
Sir Chris said the run was a chance to "thank the British public".
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The figure is up from £42.3 million in 2014/15 and £56.9 million 2015/16, according to the research.
A study by Which? looked at the work done by councils across the country.
Harry first visited the African country in 2004 on a gap year.