A Jervis v Harris clause within a lease provides for a landlord to re-enter the property to remedy breaches of the lease the tenant has failed to rectify after an express notice period. The landlord recovers the cost of repairs as a debt thus removing some of the defences available to the tenant under dilapidations claims.

Joint sole expert is an expert witness appointed jointly by the parties or the court to reduce the cost of litigation by removing the ability of each party to appoint its own expert. The joint sole expert reports to the court and may be questioned by each party. Apart from the saving in costs the main advantage is the removal of the adversarial approach taken by some expert witnesses appointed by parties.