Does your friend who previously lived on a boat know anyone who still lives on one? If they do, ask to go with them when they move/go to services/do locks etc. It's important to have some understanding of canal living to know you can handle moving a boat in all weathers/seasons etc every two weeks.

Boats come in all prices from £5k tin cans that will sink in a second to £150k luxury widebeam flats on the water. London boats are a bit pricier. Don't be afraid to go further afield for a better deal. All boats on residential moorings in London are double the price of what they're worth.

You have to buy boats outright. I bought my 45ft NB for £40k. I was very happy with the price. It was ready to move on there and then, engine looking fantastic, blacked a year before, solar panels in great working order etc. I bought it via a mixture of inheritance from grandparents and savings.

I know some people have managed to get a loan from the bank (claiming it's for a kitchen etc) but that's a bit risky.

Once you've bought the boat, make sure you sign up to River And Canal Rescue and insure it. Have some money saved for a rainy day but mostly bear in mind every year you'll need at least around £1k for your license and insurance.

There is some truth that boats sell for more in warmer months than in the winter, so if you fancy it move quickly!