Bembridge,
View the screenshots section for pictures around your area. With a good antenna location you should be able to pick Gatwick arrivals and departures as well Heathrow if the Downs don't get in the way too much. As well as into Northern France.
Yes with your Airband Radio you can tune to that frequency and see them Live on RadarBox. It does display the Flight Number, Aircraft Registration, Speed, Flight Level etc.. see the screenshots forum for more details.
The ACARS software is only available from our site and the cost is £18 per 6 months.
Hope that helps.