Popular sports venues “soft targets” for protests, says Silverstone boss

Six members of the environmental activist group broke onto the circuit during the opening lap of last year’s F1 race but a red flag owing to the crash for Alfa Romeo driver Zhou Guanyu meant the cars had slowed significantly when they passed the demonstrators on-track on the Wellington Straight.

Three of the protestors were given suspended prison sentences and the others handed community orders and unpaid work.

The Grand National at former F1 venue Aintree was delayed…