In February 2022, Gordon purchased Millbank from Tony. Millbank consisted of a large house with a substantial garden, a swimming pool and a small wood. Always keen to do things himself, Gordon ignored his friends' advice and arranged the conveyance of Millbank without the assistance of a solicitor. When he moved in, however, he found that the following items had been removed by Tony: a) A large observation balloon, which floated about 40 metres above the swimming pool. The balloon provided spectacular views over Millbank as well as the surrounding countryside in all directions. The balloon was anchored in place by three steel cables attached to concrete blocks resting on the ground. The balloon had been accessed by a rope ladder and serviced by electricity and water supplies. b) The swimming pool diving board. c) All the carpets in the house, including carpet tiles which had been glued to the floor in the downstairs bathroom; and d) A 72-inch plasma TV which had rested on a tailor-made, wall-mounted bracket in the underground cinema room. Last month, the local paintballing club approached Gordon with a view to buying the woodland at Millbank for their games. They offered him 100,000 which Gordon agreed to. He and the head paint-baller, Ed, had shaken hands on the deal and to confirm their arrangement, Ed had written on the back of an old envelope: 'This confirms what we agreed on 15th October 2022.' Both Gordon and Ed both signed the back of the envelope. The paint-ballers have since spent 20,000 digging trenches and erecting shooting platforms but now Gordon has decided that he would rather not have a lot of noisy people running around the wood on Sunday mornings. Advise Gordon as to the legal issues raised by these events, referring to legal principles, case law and statute as appropriate