Even though the tiles come in panels, they look like individual tiles. Much like installing sheets of mosaic ceramic tile. The price on them seems reasonable enough, once you convert from pounds to dollars, the price is in the $14.75 to $19.66 range, at today's exchange rate. They come in either 4 or 6 sheets of tile per pack.
The company name is Neken and you can view their website here. The following is an excerpt from their website:
"Fabriform Neken was founded in 1959 and the family business has been making their Unique Insulating Plastic Wall Tile Panel since 1964!
The tiles were first developed to answer the problems of walls running with condensation and they are still wholly manufactured in the UK.
With new metallic shades for the tiles and contemporary designs for the transfers and Tex Tiles the range has developed with each passing year to reflect fashions and consumers ideas.
Neken Tiles offer distinct advantages over traditional ceramic tiling for the DIY enthusiast. They are lightweight yet very durable, flexible and easy to cut with a pair of scissors or a sharp knife. The insulating back dramatically reduces condensation on the tiled surface and is always warm to the touch."
Here are some of their products, looks like they offer some colors that would be great for a mid-century bathroom. I am especially fond of the marble patterned tile, and the pink shade looks perfect for that pink bathroom you might want to recreate.
Does anybody know of an American source for plastic wall tile?