From what I was told the other week LCY was doing better than EDI
The airport stats released by VisitGuernsey unfortunately includes Edinburgh under 'other' but LCY had 477 arrivals for July which works out at an average of 53 passengers.
When I flew GCI - LCY and LCY - GCI the other week there was about 80-odd passengers on the Friday outbound, maybe 60-odd on the Monday return.