I think a 409 went into a 401, or the other way round. The bus that crashed into the other had a fault on the accelerator. The police have taken it away to investigate this claim. Apart from another bus and a traffic light, the bus took out an unmarked car full of C.I.D. officers. Also the bus that got hit was being driven by the Laird Street Depot's boss.
I can smell some claims. Half of Birkenhead will claim to have been on the buses and now have something wrong their necks.