Remember peeps: if you are asked for a contact in the UK and the number you provide doesn't have a +44 dialling code, your contact is not in the UK!! Similarly, if the address block doesn't say United Kingdom, it's not in the UK. Map references provided by LQ for your convenience and comfort -
http://maps.google.co.uk (this is the UK - if your country does not look like this, it's not in the UK).
@stuartiannaylor: what size of business are you looking at? IBM, HP, Dell, Siemens-Nixdorf are all active in the North West (particularly Siemens and HP). Are you looking at a large enterprise site or at an SME?