The RAF is currently conducting this much-mentioned review into future airshow participation etc (which seems to have been ongoing ever since the Wrights got airborne at Kitty Hawk) but I have a feeling that Shoreham will have a big influence on the conclusions, whenever it is published.
My own thoughts are that in future the RAF will feature only the Reds, the BBMF and the Falcons as airborne participants, with no solo displays. Waddington will remain as the only RAF-organised show at best, or the 'RAF village' at RIAT will be expanded upon as the RAF's only big airshow presence at worst.
As for the Navy, perhaps it may be felt that Yeovilton is sufficiently isolated but Culdrose is too close to Helston, maybe.