In message , User23
writes

It's also
surprising that there aren't signs at each junction on the M25 to the
nearest off-motorway services where you could at least get a cup of coffee
and a Mars Bar, and go to the loo.

Good point - of course it couldn't work at J11 (motorway:motorway only), but
any obvious reason they couldn't do something like that for the A3 junction?

If you mean signs to the A3 Ripley services, the reason is likely to be
that you cannot easily get back to the M25 without a long deviation.

--
Paul Terry