Make sure you have a time line of the events that occurred that is easily understood at a glance. Also make sure that each event has some documentation to support it and number them the same. I.E. event 1 paperwork bundle 1.
That way if he states that X happened on Y date then you can counter it with the correct date/info and easily pass paperwork to the magistrate to corroberate your claim.
Also, don't panic, the magistrates come up against idiots like your land lord day in, day out. If you're honest and sincere (and have paper work/photos to back you up) then you'll do fine I'm sure Tez.