Accessing Freeview Plus Catch-Up programs on your Smart TV does not require the download of any application. To use Catch-Up TV, simply navigate to the channel that you wish to view previous programs from.
The channel will usually list all Catch-Up TV options in the top left of your screen with a corresponding coloured button. Pressing this coloured button, as highlighted in the image below, will open the entire Catch-Up guide available for this station.
From here, you can select any program available and it will stream the show to your TV. Some channels may not show the coloured prompts - in most cases, the red coloured button will access the guide.