deb http://ftp.uk.debian.org/debian/ jessie main non-free contrib
deb-src http://ftp.uk.debian.org/debian/ jessie main non-free contrib

deb http://security.debian.org/ jessie/updates main contrib non-free
deb-src http://security.debian.org/ jessie/updates main contrib non-free

# jessie-updates, previously known as 'volatile'
deb http://ftp.uk.debian.org/debian/ jessie-updates main contrib non-free
deb-src http://ftp.uk.debian.org/debian/ jessie-updates main contrib non-free