hope only go up to 36t on their website unless I’m looking in the wrong place,any points in the right direction will be much appreciated,thank you in advance.

That took one google search. Just saying…

http://www.silverfish-uk.com/ProductDetail/0/13899/Narrow-Wide-Single-Chainring

http://www.superstarcomponents.com/en/i-o-chainring-narrow-wide-style.htm

Edit: beaten to it, seems several of us know how to use Google

I only googled hope,thank you,lots of choice.