Mexfield Housing Co-operative Ltd v Berrisford [2011] UKSC 52; [2011] WLR (D) 322
“An agreement for a term of uncertain duration could not give rise to a tenancy in accordance with its terms but, pursuant to section 149(6) of the Law of Property Act 1925, it could take effect as a lease for 90 years, determinable on the death of the tenant.”
WLR Daily, 9th November 2011
Source: www.iclr.co.uk