Hello and Welcome. My name is ***** ***** I'll assist you today. I'm sorry you're having trouble with it.
This issue happens due to difference of broadcasting standard as the TV isn't made for UK region so won't work for UK broadcasting standard. Alternate option is to connect set-top box into HDMI input of TV, select it to get set=top box home screen, plug the aerial into set=top box and run channel tuning in set=top box with its remote to get available channels in area on this TV. Set-top box would have builtin UK standard tuner and will work as video source to this TV to get local channels.
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