It’s worth worth remembering:
The RAC says: “taken alone, the highway code is not the law but many of its instructions are backed up by law and so have legal muscle behind them.
Those points supported by the law are clearly identified in the document by wording like ‘must’, ‘must not’, rather than ‘should’ or ‘should not.
Failure to comply with the other rules of the code can’t directly cause you to be fined, prosecuted or disqualified.