Thanks Colin - I thought the requirement to change the plugs, like the service, was every 6 years *or* 60k?
PRT68 - given my understanding that the plugs had to be taken out to keep my warranty, I was wondering if they would be worth keeping that’s all. Lexus charge £300 for them (fitted), so I thought something so lightly used could be of use in future. I wasn’t sure to be honest, so a non-sarcastic ‘no’ would have sufficed.