[Talk-GB] Countryside access map

[ael]

I have just noticed a newish mapper who has added many footpaths around
Oxfordshire apparently using Bing but with changset comments
"from countryside access map".

Is this copyright free? I have sent a polite message welcoming to OSM,
but pointing out that rural footpaths usually need a visit, and asking
about that map.

Is this likley to be legitimate?

ael