The present route of the B474 goes through the Chiltern Hills in Buckinghamshire. Originally unclassified, the road became the B473 in the mid-1920s before gaining its present number in 1935.
The road starts at a roundabout on the A404 in Beaconsfield and heads north along Aylesbury End then Station Road to go over the Chiltern Main Line just west of the station. The road name then changes to Penn Road, which retains a suburban nature. The houses are spread out and the limit rises to 40mph as the road steadily climbs.
After a short semi-rural section along Witheridge Lane the road approaches Penn and the speed limit falls to 30mph. Tylers Green is then passed before the road enters Hazlemere. It ends here on a double mini-roundabout on the A404.
