I've tried to avoid the Eneloop batteries due to high pricing and so so performance, the advertising hype seems to have been swallowed by so many people.
GPs Recyko are better than the original eneloop and cost less too. http://www.amazon.co.uk/product-reviews/B000NWD3K4
Gold Peak is not a big seller in the US, they sell for about the same price ($2.00) as Eneloop. I find Eneloop to be the lowest cost of the quality batteries (about $1.50 - $2.00) because I have been able to stock up when they were on sale at Costco, and I have about 2 or 3 dozen of them. None have failed in the two years I've been using them, so I'm not aware of quality issues. I have had a lot of failures with other brands over the years
If batteries I need are not on sale at Costco, I buy from Thomas Distributing, they have a good reputation for carrying high quality batteries, but, they do not carry Gold Peak. I have used Gold Peak conventional batteries, they usually come as freebies with remote controls for VCR's, TV's, etc. I have had no problems with those, except they do not seem to last long.
Pricing differences likely come about due to the pricing practices of the different distributors, UK and US prices do seem to bee different for the same products.
