london british police say sunday man arrest car collide pedestrians london injure 11 release investigation enquire continue 47-year-old arrest scene near london natural history museum saturday suspicion dangerous drive treat hospital take north london police station metropolitan police say morning release investigation enquiries continue police say people release investigation require attend police station contact incidences arrest police enquiries vehicle mount pavement collide pedestrians one capital busy tourist areas saturday afternoon police douse concern terrorist attack collision occur number pedestrians involve fully appreciate concern alarm incident cause dc darren case roads transport police command say sunday enquiries establish incident terrorist relate ... thankfully serious injuries majority discharge hospital police release london museum crash driver enquiries continue