I got this info today from AutoGlym - I was shocked that someone took this much time to reply to my email - I must say that I am well impressed : -

Thank you for your enquiry, I would recommend you use Our Super Resin
Polish followed by Extra Gloss Protection.
Super Resin Polish does not contain any abrasive substances, and imparts an
exceptionally high gloss shine to all types of automotive paintwork. Super
Resin Polish is very easy to use and contains specialised emulsifiers and
conditioners to gently clean and condition paintwork. It should be applied
to the car after washing, with a soft polishing cloth, ideally one that is
100% cotton as synthetic cloths can leave fine scratches on the paintwork.
Super Resin Polish will give your car around 2 - 3 months protection.

N.B. - Make sure that before you apply the polish that the car is thoroughly
dry. Applying polish to a wet surface could result in the finish looking
smeary with the hologram effect.

For additional protection you can then use Extra Gloss Protection, this is a
non-abrasive protective sealant and contains a complex blend of hard
waxes,resins and oils exceptionally resistant to most environmental
contaminants and weather conditions. The resultant durable, deep gloss
finish is perfect for all types of automotive paintwork. Apply after Super
Resin Polish and allow to dry for around 60 mins before buffing off. This
product will give you up to 8 months protection.

To avoid the "swirly effect", apply the polish/es over a small area at a
time, firstly in circles then smooth over the circles in straight lines
before moving onto the next area of the car. It does not matter how the
polish is buffed off.

I hope that this answers your query, however if you require further
information or clarification, then please don't hesitate to contact me
again.