The trade-focused event features 111 wines, across 15 different varieties from 32 producers covering the heart of New Zealand's wine growing country, Central Otago, Marlborough, Hawke's Bay, Wairarapa, Nelson and North Canterbury.
NZ Winegrowers' CEO Philip Gregan said this was the first UK showing of a host of new wines, which by all accounts would be "stunning'' given early feedback.
He said it would also be the first opportunity for the UK trade to get a taste of the 2019 vintage and compare regions and varieties, several of which were seeking distribution into the important UK market.
Akarua Wines GM Kathryn Pettit said the UK market, while a small one, was important because of its premium pricing.
The Bannockburn, Central Otago winery was featuring its 2018 Rua Pinot Noir and its 2018 Akarua Estate Pinot, which would retail for about £19.99 and £29.99 a bottle in UK retail stores.
For the year to May 2019, UK wine drinkers quaffed about $434 million worth of New Zealand wine, second only to the US market which accounted for $559.5 million - the two markets accounting for more than half the $1.81 billion in total wine exports.
According to the NZ Customs service, total packaged (bottled) wine exports were up 3% at 161 million litres, with another 107.7 million litres of bulk wine exported.
The average bottled price for export wine was up 2% at $8.55 per litre.
Domestic sales volume, by contrast were down to 50.8 million litres.
Mr Gregan said it was heartening to see that New Zealand wines were still performing well despite the uncertainty of Brexit.
He said all of the wines in New Zealand winegrower events were sustainably accredited under Sustainable Winegrowing New Zealand. Organically accredited wines would be showcased too.
