If you go
here you will find more about the art of washing cars then any sane man could want. Search for Morgan and there are 3 articles on how and what products people have used on their cars.
Like all enthusiasts, terminology and products can get quite esoteric.
But as a starter, wash the car using the two buckets method (look at the above site) Clay the car, and then use Good ol' Autoglym Super Resin Polish, An excellent swirl filler, but very mild abrasive.
Whatever you do don't use T-Cut.
if you get into this you have the potential of spending lots of money and be qualified to argue the benefits of Zymol v SwissWax v Dodo Juice