Reply To: Travelling from Heathrow T4 to Heathrow T2/T3 Home › Forums › Using Oyster › Travelling from Heathrow T4 to Heathrow T2/T3 › Reply To: Travelling from Heathrow T4 to Heathrow T2/T3 12/02/2023 at 15:21 #4613 MikeModerator Hi Filofax, It shouldn’t do. A negative balance would be a problem, but zero is OK.
