Tributes paid to PC Rosie Prior, who died along with motorist Ryan Welford after being struck by lorry on verge of A19

A police officer who was killed after being struck by a lorry while helping at the scene of another crash in North Yorkshire was “the very best of us”, local leaders have said.

PC Rosie Prior and a motorist, Ryan Welford, were standing on the verge of the A19 when they and a third person were struck by a heavy goods vehicle shortly before 9am on Saturday, police said.