Just to close (resolve) this thread...
I purchased this https://www.amazon.co.uk/gp/product/B01N5SAYO0/ref=od_aui_detailpages00?ie=UTF8&psc=1
It is in the loft and com8 is now 40 to 50 pct strength and 99 - 100 pct quality. So for £22.99 I am a happy soldier.
Thank you once again for all your help and, yes prpr, it was the high gain wot dun it
Is that for an additional horizontal aerial for the missing channels when I am up to it or a bigger one to give me everything?
Not an additional one, just a WB horizontally polarised to get them all.
Can't remember why MikeSh didn't do that, but I expect he will pop along and tell us.
The weather. At this time of year it often gives enhanced reception conditions.Has something changed recently?