I changed to the Freestyle Libre in September 2018 and I've had several fail. All before the first scan. I've actually had 2 fail this very day. If the sensors were £5 - £10 or my pharmacy wasn't as strict with giving me hem to me (it's 2 a month and if they fail...tough) I wouldn't mind buying a few spares myself bit at approx. £60.00 for 1...I can't afford that. They don't come with sonethsom like the Skin-Tac wipes to help them stay on either. It's just all very frustrating. Especially when I've just started the pump and being able to see the daily line graph and my averages etc. Is a massive help. Very dissapointed in the Freestyle Libre at the moment. When it's good it's great but when it's bad it's spectacularly awful!