Combination Boiler (RM5)

Hi, some background…. we moved into our first new home last year using up all of our savings. The house is using a boiler from the 60/70s which is still going strong but last winter we paid out £400-500p/m and it just isn’t economical. I’m hoping someone on here might be renovating or just has a spare combination boiler laying around and would be kind enough to give us one to keep or borrow for just this winter.thanks in advance.