Train to Kings Cross and then tube to Heathrow.
terminal 3
Take the M40 southbound From Birmingham, then join the M25 and then join the interconnecting road to Heathrow Terminal 5.
Terminal 5 is actually on the M25. All of the other terminals are on the M4 which is just off the M25.
There is no easy route from Heathrow to Tilbury so allow about 3 hours.
It's the quickest route, but not the only route.
By plane. If you are driving, I5 would be the quickest, most direct route.
I-55 or US-78
The quickest route in regards to the shortest number of miles driven can be found on Mapquest.
The Pacific highway route is about an hour shorter than the inland route.
Leeds, West Yorkshire to Heathrow Airport is 196.4 miles according to the AA route planner website.
The A1 motorway.
Intravenous