Heathrow Express makes its £10 advance fares permanent

A trip from Paddington to Heathrow normally costs £25 if paid on the day, but Heathrow Express is now making its £10 advance fares a permanent offer.
Heathrow Express train at Heathrow
They tried it last August, and now the offer will be available for anyone booking tickets at least 45 days in advance.
Tickets are available exclusively on their website or via their smartphone app. With no set travel time, you can hop on any train on your booked day.
As it happens, children aged 15 ye