Hmm.. not a whole lot of info on this beer out there. I couldn't find any recipes or much talk on any homebrew forums but from the Wychwood page:
This wheat-brewed refreshing summer ale is 4.5% ABV in bottle. The addition of the choicest English wheat malt perfectly complements the use of Styrian Goldings hops. The end result is a wonderful combination of citrus and floral aroma, with tart citric fruit flavours and a long hoppy fruity finish. A wonderfully refreshing beer.
Wychwood - brewers of characterABV: 4.5%
Cask: as a seasonal beer only
Hops: Styrian and Northdown
Malts: Pale Wheat and Crystal
I've never had this beer but with the information given I guess if I were to attempt to clone this I would make a simple wheat beer with a bit of medium crystal. Bitter with Northdown and use Styrian Goldings for flavor and aroma. And use a dry English yeast. I think this would at least get you in the ballpark and allow you to make small tweaks to get closer to what you're shooting for.