4/4 "We’re sorry you weren’t happy with our poster, but we hope you can see that we take sustainability very seriously at O2. Our marketing materials are designed to be impactful so will never be able to feature all our key messages. This doesn’t mean we’ve forgotten them or aren’t taking our responsibilities seriously though – my team and I, as well as representatives across O2 will continue to make O2 a greener, more sustainable business. For more information on our sustainability activities, please visit our site at www.o2.co.uk/thinkbig" We are currently considering an appropriate response and will update when we have sent it!