Hello RaTa,
I do not work myself for Excel but I have a friend who does. This is not the rosiest picture you can dream of apparently. He is on the 756 fleet. Since he joined them he's been complaining of poor rostering practise and sheer instability (frequently being called during his days off to come to work / constant roster change .....). He's been there for two summers now and it's gone from bad to worse
. He told me that morale is very low and people are living "en masse"; among them are a LOT of trainers. Hence the wording in the ad ; "preference will be given to type rated pilots particularly those with training qualifications". A bit of hope though : Mission control in Iceland has recently sacked a numbers of UK based managers because of their many cock-ups. So hopefully the situation is going to improve in the not too distance future.
I have personally NOTHING against Excel nor am I connected to them in ANY way. All I know is that my friend has handed over his resignation and is a MUCH happier chap now.