So this may not be timely, but I can confirm...
» no fee rise for journeys less than 30 minutes, or between 1 hour and 2 hours.
» fees doubled for journeys between 30 minutes and an hour, up from £1 to £2
» fees lowered for rides between 2 and 12 hours, in some cases substantially cut
» a tipping point at 13 hours*, beyond which rides will cost substantially more * not that anybody does this, obviously