The price of property goes up, and at the moment, down. I may live there forever. There is no implied profit.
Totally irrelevant what happens at the moment, you claimed you have been doing this for years, as a business (main source of income ) and apart from that, a business that looses money is still a business and as such still needs to be registered to work on gas.
Which part of "it does not matter whether the profit is
realised or not don't you understand?
Which part to:"
expectation of gain in itself demands registration" don't you understand?
Let me summarise it one more time for you.
Whether you MAKE a profit, INTEND to make a profit, or just EXPECT a profit from this activity DOES NOT MATTER; any one of them makes working on gas without being registered a criminal offence.