"TV sets built in 2006"
Ireland uses DVB-T only, no DVB-T2 for HD, but even SD uses the MPEG4 / H264 + MHEG5
We were still getting UK market models AFTER Analogue switch off in 2012. I think some UK owned chains STILL selling models that ONLY work via HDMI and SCART etc.
Don't get me started on Tesco's "HD Ready" Techika models either. "HD Ready" = Inferior panels that can display the HD input on HDMI, downsampled.
So no a 2006 TV is a seriously bad idea.