They inherited the GB A320's and then realised how much money can be made when you have a captive audience for 5 hours. That's a lot of cups of coffee. They then changed a number of 319 orders to 320's. They currently have around 20 CFM A320's with more to come.
Only 1 ex GB aircraft is now left in the fleet, G-TTOJ and that will be going very soon.
SW