Hi Mike,
They were sourced from nationalrail.co.uk.
This is the £4.10 fare (TFL has £3.90)
https://www.nationalrail.co.uk/journey-planner/?type=single&origin=MAI&destination=WDT&leavingType=departing&leavingDate=020226&leavingHour=10&leavingMin=45&adults=1&extraTime=0#O
This has the £22 GWR fare (TFL has £20.70 but National Rail do not offer this fare when taking the fast GWR service from Maidenhead, only Elizabeth Line)
https://www.nationalrail.co.uk/journey-planner/?type=single&origin=MLW&destination=ZFD&leavingType=departing&leavingDate=020226&leavingHour=07&leavingMin=45&adults=1&extraTime=0#O