Mik3 I just emailed them and asked as I read on here they have them from time to time. I was also asking questions about having to remineralise and they said it’s unnecessary as they have the mineral cartridge as part of the filtration system which adds enough back.
It’s our main drinking source now, however the Brita is occasionally used by the wife as she likes it for ease filling drinking bottles as we go through 4 or so a day, plus we have a couple of filters left to use.