Interesting, I spent quite a lot of time researching and never came across that thread. I will take the time to go over your recipe in more detail a bit later. What was your water profile?
In my first batch I pretty much followed GW's recipe from the 3rd edition, the result was okay but not great, my second batch increased the malt and reduced the corn sugar drastically.
Since getting Roger Protz Real Ale Almanac he suggests some Mild Malt in there so I have ordered some Crisp Vienna to try. Protz also lists Golding as dry hopped, this is information he apparently got from the brewery.
This is backed up in this photo from the brewery tour, though no mention of mild malt here. I am not trying to make an exact clone as it will never taste quite the same anyway as I only bottle but it would be nice to get close.
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