They've got this data from somewhere, so why wouldn't they have looked through the license before using it?
Anyway, speaking of MySupermarket, what happened to them? All I know was one day they decided to shut down, without clear reasons. Does anyone have more insight into why it happened?
iirc they were bought out by a supermarket - presumably to prevent customers from realising their prices weren't competitive
On the other hand it makes no sense to accompany a supposed order to c&d screen scraping of multiple (independently maintained) websites with thanks for their generosity and "this company is absolutely entitled to request compensation for their work". Either they're a valuable data provider or an licensing obstacle to using perfectly adequate screen scraping techniques, not both. Not sure why a price comparison website would screen scrape the supermarkets with APIs either...