B roads are numbered routes in

Great Britain Great Britain is an island in the North Atlantic Ocean off the northwest coast of continental Europe. With an area of , it is the largest of the British Isles, the largest European island and the ninth-largest island in the world. It is ...

of lesser importance than A roads. See the article

Great Britain road numbering scheme The Great Britain road numbering scheme is a numbering scheme used to classify and identify all roads in Great Britain. Each road is given a single letter (which represents the road's category) and a subsequent number (between 1 and 4 digits) ...

for the rationale behind the numbers allocated.

Zone 5 (3 digits)

Zone 5 (4 digits)

References

{{DEFAULTSORT:B Roads In Zone 5 Of The Great Britain Numbering Scheme 5 5