The Radio Times and many other magazines are available for free in electronic format via the Zinio for Libraries service, if your local council subscribes to the service and you have a library membership number to use to login to the Zinio Service. Most councils will provide a link to the Zinio service from the libraries page on their website.
There are magazine reader apps available for iOS and Android, or you can just use a browser to view the magazines. Back issues of most magazines are also available to download.
Free Radio Times for a year saves you over £40 compared with the cheapest annual subscription I could find.
Get some extra value from your Council Tax !