Just to add to comments Mike, we had our Gti CS Gtechniq ceramic coated along with Llumar ppf front end after buying it last year. After wash/towelling I've just used a Swissvax quick detail spray recommended by guys who did the work....obviously other brands are available but it does a fantastic job (albeit bit pricey!)
Thanks for your post above.
The company who coated my car in Oct '16 had it for two days following the PDI and (I think) it had three coats of the ceramic whatever, at the time I hadn't heard of PPF and had only leant of Ceramic coating from this forum.
The same company is going to supply me with a compatible shampoo which Im planning to use with the 2bucket process (just spent £50+ on the required items).
Rebecca has suggested Quick Detailer which I will ask about at the same time.
My 'problem' is that although Ive owned nearly 30 Cars Ive never cleaned them much at all, , they either stayed dirty, Him above washed them or I would drive them to the local ford and slosh them with a bucket.
Im begining to think that the cost of car cleaning items are comparable to those used on boats ££££££!