It is an assured shorthold tenancy.
Interestingly while I was waiting for your response a local housing association approached me by telephone for a reference. The tenant in question is going to be offered a new build property shortly.
I would still like your advice in case there is a significant hold up.
The initial AST was from 1st December 2013 to 31st May 2014. I then renewed the tenancy stating that I would renew the contract using the same agreement and would give at least 2 months notice if I wished to end the agreement. This agreement was dated 24th April 2014.
Sorry I have muddled up my tenancy terminology. The renewed agreement was a periodic tenancy.
I gave notice to the tenants on 27th May 2014 to vacate the premises by 31st July 2014.
The rent date was-:"on or before the first of each month". I has arrived on the previous day and has not been a problem.
Thank you so much for your patience. I have let property for about 20 years and never hit a problem before so was a caught off balance by this one. I am reassured by your advice, and will move forward with more confidence if necessary.