The road measures 6.28 miles long and would take a car obeying speed limits 18 minutes to travel its length.
The A4127 is a A Road and is located in the Zone 4 Highways Region.
This is a true long-distance route, journeying through numerous towns like Norwood Green, Southall, Greenford, Northolt, Sudbury, Harrow, and North Wembley.
The road is located entirely within Greater London.