Unlikely to be Scot. Although they seem the ideal operator for their LCY location and being into this market for premium charters (and also for overflying Upton Park on most LCY rwy 28 departures - indeed the Upton Park floodlights about 2 nm north are one of the visibility guides for the LCY tower), the main trouble is that LCY is closed on Saturday evening, and all late evenings, when such football charters would be wanting to return.
And anyway they normally use Cambridge, their off-line base, as their alternate.