Hackney Empire Ltd v Aviva Insurance Ltd [2012] EWCA Civ 1716 concerned the issue of whether a guarantor will still be liable when there are additions or alterations in respect of the original contract. Hackney Empire Limited (HEL) had entered into a contract with Sunley Turiff Construction Limited (STC), under which STC was to restore the Hackney Empire Theatre in London. STC's performance was guaranteed by Aviva Insurance Limited (Aviva) through a bond executed prior to the construction contract being signed.

The decision of Grant v CP Asset Management Ltd & Ors outlined the appropriate methodology to be used when examining whether a resolution passed at a creditors' meeting should be set aside as prejudicial to a creditor or class of creditors under section 245A of the Companies Act 1993.