Anyone? Just autoglym stuff from halfords?
You will need more than a polish for a thorough clean.
For an old car it would need 5 steps
Hose it down
2 bucket Wash
Clay
Polish
Wax
You can buy Autoglym stuff, it's how I started, 3 for 2 is on at the moment so its not bad price but there are better stuff than Autoglym.
www.cleanyourcar.co.uk has better stock for everything.
Things you will need
Car shampoo - anything really but NOT fairy liquid.
a lot of micro fibre clothes, at least half a dozen
a couple of large micro fibre towels for drying
a wool mitt or wash mitt.
Bottle of polish - Autoglym Super Resin is a good starting one, it's basically a filler.
Wax - Collimate make good stuff
Other things like some Perl for the plastic trims. Iron-X/Sonax wheel cleaner to clean wheels. Some wire wool and metal polish for the exhaust tips. A toothbrush for cleaning the hard to reach places.
You might also want some leather cleaner and conditioner for the seats. Then glass polish/cleaner for the windows.
Can't help with the soft top as I don't have experience with those.