Magic Roundabout (High Wycombe) whilst the A404 goes south to Marlow and Maidenhead. Magic Roundabout (High Wycombe) The Magic Roundabout in High Wycombe, Buckinghamshire, England, is similar to the roundabouts with the same name in Swindon and other places. It is located on the junction of the A40 and A404. The junction is the second meeting point of the two roads, they interchange at the start of the A404 in Marylebone, London, with the A40 forming the Westway. The two roads follow different routes to reach Wycombe, the A40 coming via Beaconsfield and the A404 via North London and Amersham. From the roundabout, the
Denham Roundabout round it clockwise in the usual way, but as traffic volumes built up, the layout was altered so that the traffic moved round the roundabout in both directions, making it a ring junction with mini-roundabouts at the points that other roads join the main roundabout. Denham Roundabout The Denham Roundabout is where Western Avenue, the A40, flows into the M40 motorway. The roundabout below facilitates junction 1 (J1) of the motorway to connect with the westbound continuation of the A40, together with the intersection of the road from Uxbridge (A4020) and the road from Slough to Watford (A412). When the