Not directly, you have to go to the train station in London Paddington and take a connection train from there.
100 miles taking this route:Take A417 CIRENCESTER, from Gloucester, to M4 in Swindon, via A419. Once you are at M4, follow signs to M4 (E) to LONDON.Take M4 to HEATHROW AIRPORT.
The best route is to take a train from Gloucester via Birmingham New Street to Cambridge.
Train to Kings Cross and then tube to Heathrow.
No
No. You can get a tube train from Heathrow into central London and then an overhead train from London to Luton.
Underground (tube) train.
Which train will go to Wolverhampton from terminal 4 of London Heathrow Airport
Tube (underground train).
Take the East Coast main line train to King's Cross, then get the Piccadilly Line train to Heathrow Airport.
From Heathrow to London - about 15 minutes by train from London to Cambridge - about 45 minutes by train
There is no direct train service between Heathrow and Folkestone. You will have to change trains (and stations) in London.
There are no trains running between Heathrow and Brighton.