Scandinova Fridge Freezer - freezer section noisy and making frost?

I have a Scandinova Fridge Freezer which I have had for nearly 10 years and I really love the style / layout. Recently, the freezer section has become very noisy and in the rapid freeze section, it's making frost. Does anyone know what's likely to be the problem and whether there is a company who can repair it for me? I am based in Herts.