The July 2011 collection of Ask the team pieces answering various legal questions relating to: the implications arising from the transfer of private sewers and lateral drains to the regulated sewerage companies, whether provisions in a commercial lease, which provide that any underlease must be granted at a market rent, could be unlawful under competition law; the landlord's ability to distrain for rent arrears if the tenant has failed to register the lease; how an underlease is affected by the exercise of a break clause in the headlease, where the break clause was introduced into the headlease by a deed of variation made after the date of the grant of the underlease; and the legal obligations relating to a refrigerant gas, R22 and the implications for the negotiation of new leases and in service charge disputes.