Groupsave restriction on Travelcard

[U-Bahnfreund]

Does the restriction of a Groupsave discounted off-peak return to London travelcard zones, that all people have to travel together, also apply for the Travelcard portion of the ticket, so when travelling on the Tube in London, or only on the rail-only return portion?

 

[Hadders]

Does the restriction of a Groupsave discounted off-peak return to London travelcard zones, that all people have to travel together, also apply for the Travelcard portion of the ticket, so when travelling on the Tube in London, or only on the rail-only return portion?

It applies to travel in London as well.