# The ACAS Arbitration Scheme (Great Britain) Order 2004, Paragraph 221

Extent: E+W+S

If such a notice or other document is addressed, pre-paid and delivered by post:
(i) to the addressee’s last known principal residence or, if he or she is or has been carrying on a trade, profession or business, his or her last known principal business address, or
(ii) where the addressee is a body corporate, to the body’s registered or principal office,
it shall be treated as effectively served.

---
Source: https://www.legislation.gov.uk/uksi/2004/753/schedule/paragraph/221 (the official version)
Page: https://openlegislation.uk/acas-arbitration-scheme-great-britain-order-2004/schedule/paragraph-221
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.