Filming sidecar world champions the Birchall brothers as they go through a full day of testing at Castle Combe race circuit.

Earlier in the year, the brothers were preparing to defend their Isle of Man TT crown. Their incredibly successful partnership with Avon Tyres, which saw a clean sweep of the podium and a lap record in 2017 was repeated at the TT in 2018. Which means the brothers and Avon Tyres are now eight-time TT winners. Castle Combe circuit is the local motorsport circuit to Avon Tyres and has over 60 years association with the company.

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