Hello,
I'd like to inform to you that the username is your contact email address (the one you entered during registration process). Please verify this thread http://communities.intel.com/thread/21315 .
I’ll be more than glad to help you resetting your account. Please send us an email including the contact email address of your account and the error message.
To send us an email, please fill this form: http://www.intel.com/partner/support/appup/index.htm
In regards to your location, United Kingdom is one of the countries currently supported by Intel AppUp(SM) center. You can find more information from here: Frequently Asked Questions (FAQ)
Best regards,
Marvin Ortega
Intel AppUp(SM) center Support