Alan - I didn't mean that you personally had to stop them - just that if it is a regular occurrence then a phone call to the appropriate station is likely to trigger a response/bollocking to those involved.
For our purposes, rule 5 is irrelevant; however, they should try to keep within our rules (large helos should not fly below 1000 over congested areas) unless specifically cleared by ATC. They should go for the maximum route heights unless weather or ATC dictate otherwise.