"Jet2's 'Low Fare Finder' is almost identical to the system British Airways use on their website and have done so for quite some time now - so I would say if they are claiming to be the first in Europe, then they are wrong."
They are only claiming to be the first low-cost airline in Europe with such a system which I believe is accurate.
Any truth to the rumour that 09/27 will be closed later this year to make way for an extended apron @ LBA?