giles - I take a slightly different view... The coach almost identically replicates the route of the train service - Brent Cross is near Hendon, Finchley Road is near West Hampstead. The train service in my opinion is pretty good - I can't see a need for a Luton-London high frequency coach as well. A pay-the-driver one way ticket from London to Luton airport at £17.50 for a 1 hour coach ride seems very expensive.