To remain within the Blackbushe ATZ and comply with local noise abatement it needs an 'assertive' descent. When on 25 look out for aircraft joining deadside directly from the 'Local Area' to the west. Some pilots have been known to make right-hand turns onto the crosswind in a left-hand traffic pattern thus meeting OHJ traffic on the deadside. Not good with a low-wing/high wing combination. I have witnessed close encounters just north of the 07 numbers. Look out for those aircraft which ignore Rule 12 and insist upon joining directly downwind or straight in to Final.