There was a carefully co-ordinated campaign to tweet the hashtag #WithoutTheNHS at 8pm GMT on 8th September.
We tracked over 32,000 tweets, and you can see below the vast majority of those were sent within the first hour.
The campaign was organised by @butnhs (Big Up The NHS) with the aim to highlight the great work the NHS (National Health Service) does in the UK.
It was very successful in becoming an official Twitter trend nationally in UK, plus 13 cities. It reached #2 nationally, in Hull and Stoke-on-Trent (or should that be Stoke-on-Trend?) You can see the full iTrended report here.