"Only 36 per cent of UK SIM-only customers expect to take a traditional bundle-plus-phone deal when their current plan ends, CCS found."
Sorry, what? So 36% of SIM-only customers will ditch being a SIM-only customer at renewal and return to 'traditional' bundle.
Thus, assuming negligible people exiting mobile ownership altogether means ~64% will keep with their current SIM only approach.
" Mann noted that this figure is considerably higher than the number of SIM-only customers today, who will upgrade to another SIM-only deal – indicating strong growth for the SIM-only bit of the market."
Mann asserts then that 36>64 is that right?