Is the UHF in Great Britain grouped into "bands", band 1 being the channels 14-30, band 2 is chs. 31-40, etc?
It seems that a broadband UHF antenna like a simple bow-tie, so common in North America since the UHF band brought TV reception to smaller cities in 1952, is not the go-to UHF in the UK.
There seemed to be more Yagis, selected bands instead of the entire former spectrum.
I have tested over a dozen UHF-only antennas of several types, many vintage and some new ones. Often wondered if "tuning" them to the present spectrum of 470-614 Mhz would make them even better.
Looking at 50+ year old antennas still on houses, gives some clue to what works in that location. Many of those cute little imported antennas with built in rotators would do nothing in some of the locations I see upstate in wooded mountain areas, but the simple 4-bay was a miracle to many trying to pull in UHF and a Parabolic to those most desperate for reception.
Example: 4 and 8-bay bowtie arrays work better in scattered signal locations such as behind evergreen trees BUT a Yagi or corner reflector bowtie will still have the edge on a weak signal with no close-by obstructions.