You'll get a SID out of leeds. General handling, steep turns, climbs and descents at a requested airpseed. NDB tracking. Just general handling, and good instrument skills is whats being looked at. You will get an engine fire and after you've handled it you will do a full proceedural ILS to land. Your performance will be set against the background of your experience level. Make sure you get a few hours in a Jet sim, like the 732 in Dublin or the 727 in Bournemouth. The people who fail are people who weren't instrument and Jet proficient, and weren't prepared.
As for the Oral, you will be asked on your previous aircraft. How does the hear work, systems, engines, how does the heating system work. Make sure you know your systems in detail even and especially if you only flew a seneca.
The HR is a non event. Why do you want to work here? Have you got the reddies for the rating? 5 mins.