One thing in common for all of them was that the TV Aerials were all pointing towards the Ledbury transmitter.
This particular transmitter is officially known as "Ridge Hill" but it's often referred to as the Ledbury transmitter as it's located not too far from the town of Ledbury.
Although, as far as I'm aware and with my research to date I have found nothing to indicate that the transmitter has problems or even the possibility that some Multiplex's / channels may be on reduced power but one thing is for sure, the received signals from this transmitter in Droitwich, the west side of Worcester and the Stoke Heath / South side of Bromsgrove have shown a significant drop in power and quality since the beginning of March 2018.
Should you currently have ongoing reception problems there is a chance that this transmitter could be the reason.
First of all you should try and identify which transmitter your TV Aerial is pointing at. If you're in or near any of the locations I've described above and your TV Aerial is pointing roughly in a Southerly or South Westerly direction and VERY importantly it has its elements horizontal as opposed to being vertical (Click on my image to see the difference) then there's a good chance your reception is being affected by the poor signal quality coming from this transmitter,
One good thing to come out of the major work which was carried out on many TV transmitters in the Midlands at the beginning of March this year was that some now have an (observed) increase in signal strength and quality which often means that should you have your TV Aerial be pointing towards the Ledbury transmitter there is almost certainly going to be the option of finding a better signal just by re-directing the Aerial onto a more powerful transmitter.
Should you have any reception difficulties related to Ledbury or any other transmitter then please don't hesitate to give me a call.