I have received the following text message on my MobileBySainsbury's SIM:-
"Mobile by Sainsbury's: Hello.
You will no longer be able to top up your Mobile by Sainsbury's phone or buy bundles of minutes, texts and data after 14 November.
After this date, you can use any remaining top up until 15 January 2016.
If you want to keep your existing number, just visit
http://help.sainsburys.co.uk/help/mobile-sainsburysor give us a call free on 40775 and we'll be able to give you your PAC code"
There is a statement about this on their
websiteThere is further information
here.