Transportation from Heathrow to Gatwick Airport.......

[JimB.]

We will be traveling through London after our ABD Rhine cruise next summer, using British Airways. Landing at Heathrow, leaving from Gatwick. We have plenty of time between connections (3+35). The BA website recommends using the National Express connector between the sites, which will only take an hour...........

BUT, the only coach that is going in our time frame leaves 2 hours after we arrive at Heathrow and gets to Gatwick only 25 minutes before takeoff.

Soooooooooooo............. what are our alternatives that are good/reliable/cheap? Hopefully those terms are not mutually exclusive, so we'll go with reliable/good/cheap in the order of importance.......