Oh dear, how many times a week to we read this or similar:-
and I was following the satnav
If you'd turned left into the restriction, I could see a case, but the sign was head-on to you; If it had been the traditional 'No Entry' sign, would you have passed it ? This makes it much harder to argue at adjudication, (forget the council, they refuse everything even if valid). I can't help thinking that satnavs give a sense of false security, because they direct you down a street based on the data they hold, and unfortunately they are almost never up-to-date, even if an update is done yesterday, it relies on the base date, but users just obey the command and are not so alert to signs for restrictions. In addition, we don't know how they handle timed restrictions and also, like here, exemptions for permit holders.