Illegally parked drive alive (piggy bank) vehicles

Illegally parked speed camera vehicles

Lets face it many drivers that receive fines because they have been supposedly caught speeding by the civilian operators of these vehicles that have parked up illegally, are unaware of the law and guidelines that have to be adhered to.

Is it correct or lawful for you to park  in a bus stop pull in?

There is a clear distinction to be made between lay-bys which
incorporate bus stops and bus stop clearways. In the former case any
vehicle may stop and park subject to any other conditions which apply,
whereas in the latter case vehicles other than buses are prohibited from
stopping during the specified period. In practice Safety Camera vehicles
may be deployed in lay-bys but not in bus stop clearways.