Ah tough situation to be in. Happened me when I sold my s14 in USA. You have to decide for yourself whatever you feel is fair, whoever contacted you first or whatever. All I can say is I'll send you a deposit tonight via Paypal along with travel confirmation and get on the next available boat/plane tonight, tomorrow or whenever suits you. I am free the rest of the weekend and have cash sitting ready. Need to know the car will not be sold before I book travel though. Newcastle is nice, but I don't need a weekend away for the craic at this stage!
Let me know when there is an update. Pm'd you a phone number also if you wanna chat.
Cheers
Pete