wakeover,
I hope so and I would try every avenue to not only get compensation for your upstairs radiators and garden, but more important for the mental inconvenience you have had to suffer over the past year.
The floods was not your doing and if it hadn't happened you would be still in your home with the same heating etc, and your garden intact.
Living in a caravan is OK for a week on holiday, but the time you have been in one, you deserve a medal.
I don't think I could have coped, good luck.