The name of the market chain is "Iceland".
The name of the country is "United Kingdom".
I’ve actually shopped in an Iceland during a trip to the UK. It is an odd sort of place, with most of the merchandise consisting of frozen food, with the non-frozen items largely consisting of oversized containers of product (reminding me of what you buy in a Costco); the store itself is as large as two 7-11 stores combined, which is to say, not large.
If you are familiar with the DC area, there is a merchant called “Murry’s” that sells portion-controlled frozen meats in lower middle class areas (many of their stores are in southeast DC and in Prince George’s County, MD). Iceland is vaguely reminiscent of Murry’s.