Solicitors negligently delayed in carrying out B’s will instructions.
Will unexecuted when B died.
C sued for damages for loss of legacy she would have received.
House of Lords gave claimant a remedy by extending the Hedley Byrne principle, by holding that
assumption of responsibility by a solicitor to a client should extend to the
Lord Mustill dissented, on basis that if claimant’s claim is sound, it
must be sound in every case where A promises B, for reward, to perform a
service for B, where it is foreseeable that performance will benefit claimant and
non-performance will cause claimant not to benefit.