thanks all. is the bike security still a bit concerning, or have they cracked the problem ?
Concerning in what way?
We were at Whinfell this year (and last). Took our own bikes (and trailer) and left them chained up outside the chalet without any fear.
Tons of bikes chained up with incredibly flimsy looking bits of wire and crappy combination locks, chained to nothing at all. So anything chained sensibly with a half decent lock on it would likely be ignored by thieves as too much hassle.
I doubt bike theft is a major issue. Other sites may be different but Whinfell isn’t exactly within walking distance of the town centre, cars have to come through security, and the guests are all terribly middle-class and likely to have bikes themselves.