It's actually in the 90's at the moment EGGC, let alone next summer.
Jet2 currently have 15 but look to be 17 next summer
Thomas Cook currently have 11 but look to be 13 next summer
Easyjet currently at 9 but at least 11 next summer
Ryanair at 7 but at least 8 next summer
Condor at 1 but will be 2 based from end of this October
Thomson at 15 and look to be 15 next summer
FedEx at 2 and still 2 next summer
DHL will be 1 from end of October
Flybe at 9 based, not sure on next summer
Monarch currently at 9 based
Virgin at 3 based but will go back to at least 4 next summer
Small planet, Germania and Enter Air all at 1 each
Air Bridge will be 1 based from end of November
The night stoppers are 1 BA, 1 SN, 1 KLM and 2 LH
That's currently 119 based for winter and N/S, with that figure rising to 125 next summer so far. Obviously some aircraft do night flights, and the Virgin Aircraft don't occupy stands overnight, but, that's a lot of based aircraft to house!