So I do, I spoke with a really helpful guy call Matt Gibbs, who suggested on the phone that it would need a new battery.
So it was sent back and I paid £84 ((including VAT and shipping back to me), a week went buy and Matt contacted me saying that
"we were not happy that the light was performing properly with the new battery.
We have since replaced a circuitry component and retested successfully yesterday. It has been charged up overnight and will be despatched this afternoon."
All for no extra cost and it arrived today in full working order

Thanks USE and Exposure, top work