Clean paving bricks to build steps (Eccleshill BD10)

For a small charity, I've removed a second lot of decking, which was rotting and dangerous. To build steps up to French doors, paving bricks will be sandwiched between some of the many paving slabs, kindly donated by Freegle members. To minimise petrol consumption and environmental impacts, it would be preferable but not essential, to collect from anywhere between the town of Harrogate and the Harrogate Road in Bradford, e.g. Pool, Yeadon, Rawdon or not far from the BD10, BD2 or BD3 areas. Concrete bricks and concrete paving slabs won't rot!!