According to google there are approximately 27.1 million households in the U.K. As of 2016.
According to the TVL website the number of TVLs issued in 2014/2015 was 25.5 million and has been increasing by approximately 80-100k per year for the previous 3-4 years. Now whilst there isn't any data for 2015/2016 let's assume all things being equal, the rate of increase has remained static so in 2015/2016 the number of TVLs issued increased to 25.6 million.
Also according to the TVL website approximately 316k premises hold more than 1 TVL. So this brings the number of 'unique' premises which hold an active TVL down to 25.3 million (and we aren't even taking into account that more than 1 does not equal 2. So a premise could hold 3, 4, 6 of even a dozen TVLs)
Now baring in mind that a premise could be a workplace, shop, sports centre, gym etc etc etc OR a household the number of households which hold a TVL must equal less than 25.3 million, unfortunately there is no data I can find which specifically references households only so this is an unknown qualitity. However even without this data there are at least 1.8 million households which currently do not have a TVL.
So remind me how many unique blogs, videos and forum posts are you seeing from people who 'have problems'. Now compare that to the figure which we know must be at least 1.8 million households without a TVL.