At 1st roundabout go straight over (2nd exit) continuing on the A4.

At the next traffic signals turn right onto Windmill Road (B452).

At T Junction turn left into Swyncombe Avenue.

At mini roundabout Turn left (1st exit) into Boston Manor Road (A3002).

Just before you pass under the flyover turn left into driveway for Serendib House (67A Boston Manor Road) This building lies directly behind 67 Boston Manor Road. Online Support are situated on the ground floor.

At the next roundabout take the 2nd exit (straight over) and then bare left almost immediately following the signs for Central London. This takes you onto the A4 Great Western Road.
Continue on the Great Western Road for ?? miles until you reach Gillette corner.

Continue straight over the traffic lights at Gillette corner and within ¼ mile the Glaxo Smith KlIne building will be visible on your RHS. This is a massive mainly glass structure with the Initials GSK clearly displayed on the building.

At the 1st set of traffic lights immediately after the GSK building turn left into Boston Manor Road. 

Pass under the flyover and immediately afterwards turn right into the driveway for Serendib House (67A Boston Manor Road). This building lies directly behind 67 Boston Manor Road. Online Support are situated on the ground floor.