**UPDATE 20th May at 0750hrs**
Rte's 482 & 490 only diverted towards Southall or Richmond since first bus today.
There is no access to Heathrow Airport Terminal 4 via the usual route due to a logistical issue.
Routes Affected 482, 490
Towards Heathrow Airport Terminal 5 from Southern Perimeter Road at Snowdon Road, A Southern Perimeter Road, circumnavigate the Beacon Road Roundabout, A Southern Perimeter Road, L Stratford Road, A Salisbury Road to then serve Terminal 4 Bus Station and LOR.
Diversion Reference D90344