Q2. Can the Uber Taxi driver charge the fare recorded on the taximeter while the passenger is expected to pay the price quoted by Uber Taxi app?
The law only requires that the taxi driver charges no higher than the appropriate scale of fares specified in Schedule 5 of the Road Traffic (Public Service Vehicles) Regulations (Cap. 374D): see Regulation 47(2) of the Road Traffic (Public Service Vehicles) Regulations (Cap. 374D).
If it is agreed contractually via the Uber Taxi app that a fare less than the appropriate scale of fares specified in Schedule 5 of the Road Traffic (Public Service Vehicles) Regulations (Cap. 374D) is to be charged, the taxi driver is bound by that contract and cannot subsequently renege from his or her promise, provided that there is nothing illegal to charge lower than the scale specified in Schedule 5 of the Road Traffic (Public Service Vehicles) Regulations (Cap. 374D).
Thus, the Uber Taxi driver cannot subsequently charge the fare recorded on the taximeter when the passenger has only agreed to pay the price quoted by the Uber Taxi app and the Uber Taxi driver had agreed on it.