 Between Brownhills and Kenilworth it follows the line of the ancient drover's road called the Welsh Road, which probably has pre-Roman origins.The A452 starts south of Leamington Spa with two separate spurs running to junctions 13 (southbound) and 14 (northbound) of the M40 motorway.These meet and the road heads into Leamington along Europa Way, a road newly created at the same time as the M40 extension in that area.