Londoners: What's the best public transport option from Heathrow to Kings Cross?

[Hover Fly]

Older Person's Bus Pass, which is valid on buses across England and Wales (Dunno about Scotland).

Only for England, not Wales, who have their own.
https://www.gov.uk/government/publi...-england-national-concessionary-travel-scheme

 

[Dogtrousers]

Only for England, not Wales, who have their own.
https://www.gov.uk/government/publi...-england-national-concessionary-travel-scheme

interesting, It seems England, Wales, Scotland and NI each have their own bus pass scheme. In England you need to be pension age, in the rest you need to be 60.

https://www.gov.uk/apply-for-elderly-person-bus-pass

It doesn't say if they are interoperable, does one work in another's territory? I doubt it.

To complicate matters further, in London you can get an Oyster Freedom Pass at 60 which gives free off-peak travel on all TfL services.