Yes, it is guidance from the Government (with some legal force) https://en.wikipedia.org/wiki/The_Highway_Code#:~:text=Although%20failure%20to%20comply%20with,

Yes, it is guidance from the Government (with some legal force) https://en.wikipedia.org/wiki/The_Highway_Code#:~:text=Although%20failure%20to%20comply%20with,)%20and%20'do%20not' https://en.wikipedia.org/wiki/The_Highway_Code#:~:text=Altho.... Although failure to comply with the other rules would not, in itself, cause a person to be prosecuted, the Highway Code may be used in court under the Road Traffic Act 1988 to establish liability