I've been having a look for a small and light lock something along the lines of the ski lock type ones
https://www.amazon.co.uk/Jobsworth-R.../dp/B079QKKV8R

But virtually all of them gets iffy reviews with lots saying it won't work after they change the combination .... does anyone know if any of the manufacturers make a decent one or any other suggestions for small, light and easy to store locks.

It's for places like if we go for a beer our bikes are within sight from where we sit so just something half decent to stop the opportunist nabbing them.