The B175 is a B-road heading towards Romford from the north.
It starts on the A113 at Passingford Bridge, just to the south of the M25. The B175 heads south through the linear village of Stapleford Abbotts and then zigzagging into Havering-Atte-Bower, a small village that was once more important than Romford.
Chase Cross, the first of the suburbs of Romford, is soon met - and with it the B1459 - before the B175 ends on the B174 a few hundred yards from the A12 Eastern Avenue. Romford town centre is on its far side.