Can anyone help please? I've discovered my dad's old Rolleflex, a 1960's model with f2.8 80mm planar lens. It looks pretty clean on the outside to me, but it's been inactive for years and the viewfinder is dark and full of dust. I don't want to tinker with it so I'd like to get it serviced before I use it. Can anyone recommend me somewhere to take it? I live in south east London.

Thanks

Snowdog