Download the aerodrome chart from the AIP on
http://www.ais.org.uk and study it. Take it with you as they have various areas where you will be directed to park after landing. (Make sure you know where the 'H' is for landing) You may be lucky and get a "Follow Me" vehicle. If so follow him and follow the marshaler' s instructions. Thy will often park you at the Royal Suite but not always. For departure first contact Clearance Delivery for engine and rotor start. When ready contact Ground for Taxi they will change you to Tower for take off which will be back at the "H". (If you have two radios set up all the frequencies beforehand - Try and get the transponder code set before lifting into the hover as playing with the knobs as you are taxying down Sierra can be interesting) Be careful of your departure path especially in a single and keep well clear of the runway. PM me with your telephone number if you want to talk it through. Not a bad idea to go with someone who has done it before on your first go. Good luck.