Posted 16th JulShipping from United States
Pokemon: Let's Go, Eevee! from Amazon.com in their Prime Day sale - though I don't have Prime in the UK it still let me have it for $29.99
With all delivery costs and import fees to the UK it comes out at £32.76 if you purchase in USD using Revolut (or similar) so you get the best rate. If you let Amazon handle the conversion it works out at £33.96 - still the cheapest deal I can find since the Game Collection one expired.
Hope this helps someone!