The message
from "CK" contains these words:

Hi Mike,

Thank you for your suggestion.

Since we are living on the other side of the mountain, we can't receive the
signal from England.

Janet Baraclough writes
I think you misunderstood. Signals are relayed to many transmitters
from different regional broadcasts. Usually, your TV roof ariel is
directed to the transmitter that supplies the strongest signal to that
area. However, there may be other, fainter signals available from other
transmitters, which can be picked up in addition with minimal equipment.
At our last house in a limited-reception area, my husband fitted two
ariels collecting signal from two different transmitters to one TV,
giving us the full normal choice of channels. Our next door neighbour
couldn't do the same. Reception ranges can vary considerably within a
matter of yards, depending on topography.

. The BBC has a technical advice department devoted to helping solve
such problems, it's a free service.

I have two aerials in my loft, each pointing at a different transmitter,
and as a result I have one TV in the kitchen that receives one region
and the other in the lounge that receives another - so it is possible,
depending on reception. If the signal is week you can get more elaborate
aerials, but find someone who really knows about them.
--
David