Seems like it could be a bit of dodgy company to me, I always thought that any UK company had to put it address and contact number on the website, looking at this website there is no contact details at all apart from an email address and a web form.
I can not think of any reputable companies that only have paypal as option for payment.
and a quick whois search reveals that it is not a UK company at all despite the .co.uk domain, in fact the company is based in Hong Kong:
28th Floor, IFC Phase II%%Electronics Home
if the company is genuine that i would expect delivery to take a while considering where it is coming from but personally i doubt it is genuine