If the device is connected to the Internet and the blue ‘UK Radio Portal’ logo appears on channel 277 then you can connect.
Unfortunately, some older TVs can connect to the Internet but don’t run the right technology to be compatible.
If you are a real tech guru then you need to find out if your TV is HbbTV compatible, which is the technology used to launch the service.
Also, some TVs come with a sticker that says “Freeview Play Ready”, which means it is definitely able to connect to UK Radio Portal.
How can I tell if my device is compatible with UK Radio Portal?