i have a domain .co.uk register on a registar (i forgot the name), now I can't manage it
now how I can get back it
my domain is beyeu.co.uk

These are your domain whois details. Either this domain registered through GRS or Nominet directly.

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Response from Whois server whois.nic.uk


Domain Name:
beyeu.co.uk

Registrant:
NKT

Registrant's Agent:
Global Registration Services Ltd [Tag = GRS]
URL: http://www.globalregistrationservices.com

Relevant Dates:
Registered on: 17-Jul-2004
Renewal Date: 17-Jul-2006

Registration Status:
Registered until renewal date.

Name servers listed in order:
dns1.ttvndns.com 205.209.180.80
dns2.ttvndns.com 205.209.180.81

WHOIS database last updated at 09:35:01 28-Jan-2005

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For further information and terms of use please see http://www.nic.uk/whois
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i know the whois info, but I don't know how to get back my domain, hix

I don't quite understand the problem.

Are you the registrant (NKT) who registered the domain in July 2004? In that case the Whois tells you who your registrar is, so even if you'd forgotten previously you now know that your domain was registered through Global Registration Services, and you can contact them for log-in details etc.

Or are you someone who had the domain before but lost it? In that case I'm afraid there probably isn't a lot you can do unless you have a trademark.