Hi there and thanks once again for the advice.
Well, what a week! After a visit to three diy stores and two plumbers merchants, managed to get a metal extension hose, with 3/4 fitting on one side, and a larger fitting on the other, with an adaptor to get it to the right size. Great news!
However, having screwed it in well by hand and used some of that white sealing tape, the fitting is leaking ever so slightly.
Have tried tightening it further, but water is definitely forming, and on both sides of the fitting. Can still use the machine, just have to have a bucket under one side and a towel around the other, and turn the tap off when not in use - so not ideal, will need fixing soon.
Is it time to call in the professionals, or is there any advice on what may be able to do myself to fix this problem?