Apologies for replying on an old post but I just thought I'd let people know that after doing battle for the last 4 weeks with John Lewis and a 4.5 year old LG OLED TV with shocking panel damage or as they insisted on calling it 'screen burn' (which they dont cover, I've finally had written confirmation from LG that it is a faulty panel issue. Based on my last contact with John Lewis they have clearly been in touch with LG as LG contacted me out of the blue to advise they would be emailing me. Therefore I have told JL that under Consumer Rights 2015 they need to repair or replace.
For anyone else battling I found these links which may be very useful
https://www.johnlewis.com/our-services/protect-plus - this one shows the 'terms and conditions' for their additional cover which covers screen burn in place for TV bought approx 2018
https://www.johnlewis.com/our-services/added-care/added-care-terms-and-conditions-archive - this is the most important link as it show the terms and conditions in place prior to mid 2018 which doesn't explicitly mention screen burn nor can you insure against it if you read the cover details. It also included their updated tyerms and conditons which now explicitly excludes screen burn.
This is the information I think I got them on after tooing and froing over the last few weeks.
I am happy to add all of my emails and their replies if needed.
If this helps even one person then fab