I suspect it will depend upon your proximity to a Mobile Phone mast that will radiate 4G services. This hasn't happened before because TV and Mobile frequencies have been well separated but under the scheme to auction off spectrum for 4G some of this will be close to some Digital TV (ie Freeview) frequencies. It might be cheaper to switch to Freesat or even PayTV supplier!
Isn't it a pity the switch to digital has seen the problems due to greed of Government. Many more Digital TV services means the end quality of the picture isn't as good as it could be (and in some cases it's awful). Same with the switch to DAB where for large parts of many urban areas (covering most of the population) the quality is below the FM transmissions it will replace (and a massive cost to the consumer of several £ Billions in replacement equipment).