Although the car has had a full respray at some point in its past. It clearly didn't get washed and waxed very often. This resulted in an orange 'bloom' in the paintwork. Panel by panel, I removed the bloom with a gentle cutting fluid (GP white is a pretty hard paint so there's no worry of scratching it) and followed this up with an initial coat of wax. As you can see from the pics below, water is now beading nicely on the surface.