Shame we can't always match the reliability of the weather.
There are many places in the States, Canada and Oz which get 300 + VFR flight days a year, unfortunately as this summer has proved, that big bit of sea to the left can be a pig when she wants to be.
Whilst I have no "proof" as such, I bet if you were to send one pilot to the USA or Canada for 4 weeks, and have one pilot in the UK for 4 weeks, the person who went over the pond would get more hours flown.
Maybe I am just bitter after our summer