Hiya Pam
Yes, I have been on a couple of JustYou holidays and thoroughly enjoyed them both.
As I live in the Midlands I'll be travelling down to Gatwick the night before our flight just to avoid the early alarm call !
I have flown from London with JustYou before
(although I think that may have been from Heathrow - age, it's a wonderful thing). The rep at the airport was on-the-ball. She spotted the JustYou baggage label, came across to me, introduced herself and helped me out (no, not out of the airport !). Hopefully, that will be the case again.