"You indicated in your letter of31 October 2008 that the part of the residential flat is comprised on the ground floor but our client notes that the freehold was sold subject to the lease of the ground floor shop lease and the lease of the first floor flat comprising 3 rooms kitchen and bathroom. That description as set out in the auction contract accords with the flat on the first floor the plan of which identifies it as "
"22. In East Pantiles (Plant Hire) 1981 263 E.G. 61 Brightman L.J. stated the conditions for what he called "correction of mistakes by construction": Two conditions must be satisfied; first there must be a clear mistake on the face of the instrument; secondly it must be clear what correction ought to be made in order to cure the mistake. If those conditions are satisfied then the correction is made as a matter of construction" 23. Subject to two qualifications, both of which are explained by Carnwath J in his admirable judgment in KPMG LLP v Network Rail Infrastructure Ltd [2007] Bus LR 1336, I would accept this statement which is in my opinion no more than an expression of the common sense view that we do not readily accept that people have made mistakes in formal documents. The first qualification is th at "correction of mistakes by construction" is not a separate branch of the law, a summary version of an action for rectification. As Carnwath LJ said, at p 1351, para 50: "
"The first imperative must be that the law ought to uphold rather than destroy apparent contracts. Secondly, the common law rules as to a mistake regarding the quality of the subject matter, like the common law rules regarding commercial frustration, are designed to cope with the impact of unexpected and wholly exceptional circumstances on apparent contracts. Thirdly, such a mistake in order to attract legal consequences must substantially be shared by both parties, and must relate to facts as they existed at the time the contract was made. Fourthly, and this is the point established by Bell v. Lever Brothers Ltd. [1932] A.C. 161 , the mistake must render the subject matter of the contract essentially and radically different from the subject matter which the parties believed to exist. While the civilian distinction between the substance and attributes of the subject matter of a contract has played a role in the development of our law (and was cited in speeches in Bell v. Lever Brothers Ltd. ), the principle enunciated in Bell v. Lever Brothers Ltd. is markedly narrower in scope than the civilian doctrine. It is therefore no longer useful to invoke the civilian distinction. The principles enunciated by Lord Atkin and Lord Thankerton represent the ratio decidendi of Bell v. Lever Brothers Ltd. Fifthly, there is a requirement which was not specifically discussed in Bell v. Lever Brothers Ltd. What happens if the party, who is seeking to rely on the mistake, had no reasonable grounds for his belief? An extreme example is that of the man who makes a contract with minimal knowledge of the facts to which the mistake relates but is content that it is a good speculative risk. In my judgment a party cannot be allowed to rely on a common mistake where the mistake consists of a belief which is entertained by him without any reasonable grounds for such belief: cf. McRae v. Commonwealth Disposals Commission (1951) 84 C.L.R. 377 , 408. That is not because principles such as estoppel or negligence require it, but simply because policy and good sense dictate that the positive rules regarding common mistake should be so qualified."