I havent confirmed any numbers, but it was a foregone conclusion, that moment eJ announced that Luton would be the site of the 'new' HQ, that many Go staff wouldnt commute, let alone relocate.
There is 'a' job for everyone at the new eJ, but it may not be the job they were doing til now, nor one they want to do. So some attrition at a time like this is perfectly expected, and not 'news'.