Originally Posted by Swiss Tony
At the very, very most, T1 to the CP is 5 miles which would be about £20. I'd say it's closer to 3.5 miles, so should have been less than half what you paid.
The taxi was from T
4 to the CP.
At most airports I frequent, the charge would have been £0.00 (plus tip if you want) since the hotels operate their own (contracted) shuttles. The Hoppa is - IMO - licensed extortion on a far greater scale than the odd cabbie with a wonky meter.