Thanks for that ~Breezy_Pete & Murdockman. I would be more than "mildly sceptical" about anything that Garage came up with. Over the past many years I have had a variety of cars serviced by a great Independent; sadly the Owner retired a couple of years back. I have subsequently gone back to using a rip-off Skoda Main Dealer, largely to get any ECU updates and for the purpose of having a reasonable Service History record. The year of manufacture of the Car is some time in 2012 or 2013, I believe that the engine is a CTHE, it has never been replaced - sadly, like most Twinchargers it does use a certain amount of oil. To be honest, I was not aware that I needed to run the A/C once a month although I do now know that makes sense; the Hot & Cold water pump for an attic conversion that I no longer use failed recently when friends came to stay - the plumber who replaced it made exactly the same comment - I now shower upstairs every few weeks ;) Do you mean "Platinium tipped plugs" or Iridium? As I said, I have used Denso SKJ20CR-A8s since first I had the car serviced by an Independent - I just wondered whether they are still the #1 recommendation. Once again, many thanks for your speedy help.