Girlguiding North West England has headquarters in the city that is on the north bank of what river?
Girlguiding North West England:  The region was introduced in 1960 covering the Counties of Cumberland, Westmorland, Cheshire, Lancashire, plus the Isle of Man, with the headquarters in Preston. Preston, Lancashire:  On the north bank of the River Ribble, it is an urban settlement and unparished area that together with surrounding rural civil parishes forms the City of Preston local government district of Lancashire.
Ribble