Section 23 of the Landlord and Tenant Act 1927 (LTA 1927) contains provisions for the service of notices under that Act. Its terms have also been incorporated into other statutes, including the Landlord and Tenant Act 1954. LTA 1927, s 23 deems notices to be served in certain circumstances, which operates favourably for the sender. See, generally, Practice Note: Break clauses and notices—service (under 'Service—LTA 1927, s 23'). The relevant part provides that: ‘Any notice, request, demand or other instrument under this Act shall be in writing and may be served on the person on whom it is to be served either personally, or by leaving it for him at his last known place of abode in England or Wales, or by sending it through the post in a registered letter addressed to