The more I investigate that company, the more I get concerned.
The website states that it's run by Signalimit Ltd, from 24 Sylvia Avenue in Birmingham. Signalimit is certainly registered at Companies House and that is, indeed, the registered address of the company. However, oddly (and worryingly), the Companies House website doesn't show the company as having any directors. Further, it was only set up on 14 February this year, so it's certainly not a well-established firm.
24 Sylvia Avenue is a semi-detached house on a Birmingham cul-de-sac. While it's not unusual for a small company to have its registered office at the home of a director, I have to wonder whether the people at that address actually have any knowledge of the company.
The phone number given on the 'Contact Us' page is '808-189-3133' which, as it stands, isn't a valid UK phone number. Further, it's presented in the way that a US phone number often is (which is a mistake commonly made by scammers in China, Nigeria, etc when they try to pretend that they're UK traders).
Further, the customer service times are quoted in US Eastern Standard Time (which, again, is a mistake often made by overseas scammers when they try to create a site that looks like it's in the UK but then use the same template as they do to make it look like they're trading in the USA).
The phone number on the website's webpage has '+44' in front of it though, which would mean that a '0' needs to go in front of it to create a valid UK phone number. (i.e. 0808 189 3133). However a bit of googling shows that number to be associated with the computer hardware company, Nvidia, which clearly has nothing to do with the suspect website.
The sales page makes references to 'Sales Tax' which, once again, is what one might expect to see on a US site (or one which is pretending to be based there), rather than on a UK one. That again suggests that a scammer has simply used the same template for his UK website as he does for his US ones.
The domain name for the website was registered via Go-Daddy's anonymising service, so that people can't see who's behind the website. (That's always worrying with any trading website).
The returns address given is actually that of a perfectly legitimate 'fulfilment service', which handles shipping and returns for companies. So it's
possible that, rather than being a total scam, there might be a genuine company that aims to send out stock (and accept returns) using that service. So it might be worth asking them if they've got any contact with Signalimit Ltd (although I wouldn't be at all surprised if they said that they'd never heard of them):
http://www.rapidfulfillment.co.uk/contact-us/
If you're lucky, and Rapid Fulfillment Ltd actually knows something about Signalimit Ltd, there's just a (very) small chance that you might be able to get in touch with them. However I suspect that you've been conned by a scammer in China, Nigeria or somewhere, almost certainly meaning that the chances of getting your money back will be nil.
Sorry!