Originally Posted by
mcdhu
They're 700s - nose gear doors stay open after gear down whereas 800s don't.
Or, for the purists, maybe the odd 'Garretted' 600 in amongst them.
G-OPOL is a re-engined Series 3B, and the two rearmost are both Viper-engined: a 600 (G-BKCD) on the right and an unidentified 400 (or earlier) on the left.