Q. What is a lawful order?

An order is generally lawful provided that it is for police purposes and would not render you liable to any criminal, civil or disciplinary action.  In case of doubt, contact your BB.

You can be required to perform overtime by an Officer of a higher rank.

Work which you may not be required to perform ;

It would generally be unlawful to require you to undertake:

1. the regular cleaning or any part of the cleaning of a particular Police Station, and
2. any other work not connected with police duty.