We'd been trying to get a freeview signal for our tv but struggling with thick walls, despite being less than half a mile from an antenna. We'd tried an SLX indoor amplified, then a One For All indoor amplified but with little success (both 4g filtered). We were debating whether we would have to install an outdoor aerial but were a bit put off by the cost and bulkiness of some of them.
Saw this in B&M and decided it was worth a punt, despite there being very little info on specs like gain, filter etc due to the price and the neat design. And lo and behold it works a treat (best when outside, but still better than the others inside), we're now picking up most of the freeview channels, including HD.
Neither the box or the instructions are particularly enlightening specs-wise, so I know this might be cold for some AV enthusiasts!
Thought it might be helpful to someone else!
Edit: Link to item info (not available to buy online) http://www.bmstores.co.uk/products/optimum-indoor-outdoor-tv-aerial-290579