It would be a better record than mine then.As the majority are found near Southern Wood ants near me.I'm guessing that you know the area around you very well and that you haven't overlooked any Wood ants.The Ladybirds of Surrey by Roger D.Hawkins has just one record of
C.magnifica away from
Formica rufa ,here it was seen with the aphids tended by
Formica sanguinea,I must admit that I do not know much about which species of ants are present near you.I do agree that from the pattern of the spots underneath that it is a Scarce 7-spot though,interesting indeed Janet