"Shire Beds" or "Latex Sense": Are their mattresses any good?

I am looking to buy a king sized pocket sprung mattress in the next week and have come across the Yorkshire based company "Shire Beds". Specifically I'm looking at their higher end models in the Eco range and was wondering if anybody had had any experience with their products? I can't audition the beds anywhere locally so would like to know if they are worth pursuing as an option or should I end my interest here...?
On paper the mattresses look good but their own website doesn't give much more than the basic specs. I've trawled the web but can find precious little about them so if you have bought any of their products (doesn't need to be from the Eco range), could you let me know if you found them comfortable, durable, good value for money etc?

I'm also intrigued by the Latex pocket sprung mattresses by "Latex Sense". I'd love to know if your experience of them would back up the glowing testimonials they seem to have on Trust Pilot.

Thanks in advance, much obliged.