O2 have said that ‘To improve your local network and help keep everyone connected, O2 are carrying out essential work in FY85SB. While we do, your signal might come and go. We’ll keep you posted though. We’ll start on 17 April and finish on 19 April.
Progress on the work can be checked via this link: https://status.o2.co.uk/?cm_mmc=SMS-_-06081NetworkDisruptionSameDayUpdate-_-A001421908-_-CTA-_-SCVM-_-06081