Thanks again. I searched on Amazon and, to be fair, there were only 2 which were more than £100, and the next down was about £70. Here is the top one (£130+)Theres no way on God's green earth a Log Periodic aerial should cost £100 unless sold as a kit with a whole bunch of mounting hardware such as a pole and mast clamp kit.
If some UK vendor is trying to charge you £100 for supplying just the aerial, delivered to your door, then tell them to do one.
The best Log Periodic available for your installation is this one from Aerials & TV in Sheffield. LINK
The reason is that it is tuned down to the narrower channel range that Freeview is heading towards at your transmitter. This means it picks up more signal than a standard Log.
As for what hour local installers charge, I have no idea precisely. Where I am, a basic installation such as yours with current aerial removed, new one installed on the existing pole and aligned with a proper meter, then cabled down to a suitable TV point would be around £120.
https://www.amazon.co.uk/RCA-Compac...=log+periodic+tv+aerial&qid=1656182864&sr=8-1
Unfortunately, the link to Aerials & TV in Sheffield didn't work, but if you give me the code or specification for it then I'll search for it.