I suggest you use Amazon.co.uk as it would offer free delivery of the item. Please note that if your television is not compatible to receive ITVX directly, you may still be able to receive this content via a compatible device (such as tablet, set-top box or firestick). You can search the Amazon site (you put in your postal code ) with a phrase like "24 inch smart tv with DVD built-in" Prepare to be swamped by the results unless you add a brand to the search.
That would suggest to me that after you find something of interest on the Amazon site, you chat with ITV (which has an onscreen chat button at the bottom of the following page on the far right):
https://help.itv.com/hc/en-us/articles/115000562353-Which-Connected-TV-devices-are-supported-
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