" and its punctuality record is second to none "
True. But on the very rare occasions that Ryanair do cancel a flight, you will be just abandoned. They barely pay lip service to their legal obligations.
I've suffered that fate with them.
After that incident I resolved not to deal with organisations that treat customers with barely concealed contempt - I'd rather walk than use them ever again.

You also have the option of Cityjet (AF) from LCY if that's more convenient.