He states "if changes are made to your employment due to a change in legislation, then your employer only has to give you 28 days notice, whether you want the change or not".
Royal Mail have been very clever here by using the "7.5 tonnes vehicle speed change" to force through these changes.
When i asked why they were doing it now rather than when legislation takes effect next year, he replied, "Royal Mail claim they bring change in early so they can iron out any problems that occur, so that when the law comes into effect, they will already be working within it.
I guess RM lawyers are earning their money