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There are no red skimmers (Orthetrum species) found in Europe, although, perhaps confusingly, Crocothemis servilia, a species related to this one, is called the Scarlet Skimmer in the USA.
I am, of course, perfectly happy with your ID of this insect. However....I rejected it as this one has 13 Ax (Scarlets have 8.5 to 11.5). Is the number of Ax not necessarily diagnostic?
The Ante-nodal Cross veins (Ax) are only clearly visible on the close up shot of the three that you have posted here (where the right wings can be seen).
In this photo I count 11.5 veins on the forewing, 9 on the hind wing (the forewing being the one that is usually used).
There can be some variation, but it should be within the ranges given (anything outside of these would be very unusual).
Thank you Roy. I may have been counting the cells rather than the veins - silly mistake! Your continuing help is really appreciated.
Lat/Lng: 42.5515, 2.8865