Example Error 451 page
HTTP/1.1 451 Unavailable For Legal Reasons Content-Type: text/htmlError 451: Unavailable For Legal Reasons
Access to this domain has been restricted in the United Kingdom due to the Court Order [Blocked Website]/[Case number] following the Judgment [Name of Court Case] relating to [Website or service name].
This Court Order was imposed under Section 97A of the Copyright, Designs and Patents Act 1988.
This Court Order was became valid on [Date of start of Court Order] and is currently valid until [Court Order Expiration Date].
The Court Order was obtained by [Organisation Name]. In case of error, such as a domain mistakenly identified that should not be blocked under this Order, you may contact them via [website contact page].
If you believe this that this web domain has been incorrectly blocked, and wish to challenge the order itself, you can contact [the appropriate legal authority] at [the appropriate legal authority] or [the address of the appropriate legal authority].