I'm sorry to hear about your loss, M C Stevenson.
I can confirm this is a scam from the DNS information:
Domain Name: FLYOVERGLOBE.COM
Created on: 28-Oct-09
Expires on: 28-Oct-10
Last Updated on: 31-Oct-09
The site has been registered for a year, indicating a get-rich-quick throwaway site. The telephone number registered is invalid.
The aircraft picture on their website is standard from Boeing website, and I'm a pilot, and can find no CAA information about their registration. Also, after filling in some information to book a flight, I realised they use flight numbers for different airlines, like KLM and Wizz Air Romania, but they don't advertise to be a travel agent.
Thanks for posting here to warn others of this scam.