The best way of ensuring the service is maintained is for people to use it. The more people talk about and promote the service the better in my view. A lot of travellers to London only ever think of Gatwick as a route in and don't understand that the end to end travel time for those going into central London is significantly longer and more expensive around £40 return compared to £6 on the DLR. I can generally do IOM to central London in 3 hours on BA via LCY but it takes 4 hours going via LGW and EZY. Also the times of the BA are much better.