The One For All Ultra Flat Digital Indoor Antenna (SV9215) is priced at only £14.99. I picked this up from Argos yesterday for £28.99. It's going back because I just saw this on Play.
It's also the same price on Amazon and most other places have it for sale around £20. Quite a bargain at this price if you're after an indoor aerial, especially compared to the Argos price.
A digital aerial with an ultra flat design and construction for easy hiding behind a flat panel television or cabinet
This aerial blends in harmoniously with your interior yet still ensures superlative reception.