It sure is JP
But in the light of what SPG has posted
If I were him, I'd cough up on this occasion
An "unprotected" bike wouldn't be covered on the insurance
There'll be a "clause" (which you've agreed to) to stop you claiming
Because they can say, you "failed" to take "reasonable precautions" by not locking it
Glad you've got it back relatively unscathed SPG
Take this as a very "lucky" break and a valuable lesson
NEVER EVER leave the bike "unlocked" if "unattended"