He spent a considerable period of time in prison on remand over the machine gun on his aircraft.
Maurice Kirk was arrested on the charges of possession of a firearm, and offering the gun for sale. The gun concerned was a decommissioned WW1 machine gun, which he obtained attached to a replica First World War Airco DH2 aircraft. The gun had no trigger. It had holes drilled in it. You can see quite clearly in the photograph, that the barrel is blocked. In fact, it was made up of salvaged parts from several other WW1 guns, with the sole purpose of looking good on the DH2.
The aircraft, gun included, was, at one time, owned by the RAF. It has had many owners since, including Maurice. It has appeared at air shows with gun attached. Maurice sold the aircraft one year before his arrest.
By coincidence, the arrest and subsequent search of the family home occurred just after he was required to exchange documents with the solicitors defending South Wales Police in his case against them for harassment.
Following his arrest, Maurice was held without bail at Cardiff Prison. He went on hunger strike.
http://kirkflyingvet.com/blogs/legal...Case%20summary[1].pdf