Hi Chris,
If you're new to AG brewing, you might want to brew a more generic beer first and then gradually work your way towards a more exact replication of the beer in question.
In any case, you should use some brewing software to help keep a record of your efforts and to give an indication of what you're likely to end up with, once you've chosen the ingredients for the brew. These beers are pretty easy to make with kits and to be honest, they are something of a challenge to make with all grains and I gotta level with you - why would you go to the effort to make an all grain beer, only to have it end up tasting like carlton draught!!
I don't actually have an all grain Carlton Draught recipe but I would aim for a pale lager recipe and add plenty of Pride of Ringwood hops to bitter and flavour it with and help add a dry flavour note to the final product. A little bit of pale / light crystal malt (no more than 300g) and up to 500g of Dextrose in the boil would also be appropriate for this particular beer. Ferment with S-23 lager yeast or if you want to get fancy, a smackpack or tube of Danish Lager yeast and remember, keep the fermentation cool. Don't drink for at least 4 weeks and keep the bottle/keg cold to help develop and condition the beer.
The keys to making a good lager are: Fresh Ingredients, Temperature Control and Patience...
Cheers,
TL