Just back from Tesco. The Technica TV range of products are all on sale.
TV Signal Booster £2 (down from over £10)
Manual Scart Switch £2 (down from over £10)
TV Cable £0.50
Auto HDMI Switch £5 (reduced from over £20) - this is the cheapest HDMI switch I have seen anywhere
and various other .. in the same area.
This was in Reading store - should be nationwide.