BBC is reporting 160 thousand Tory party members. From links provided by The Don earlier in the thread we can summarize they had no more 125 thousand members a few months ago, I think that info may be faulty. Given the information we have I think their numbers started to rise after the Brexit referendum in 2016, they mostly gobbled up former UKIP members.
https://www.bbc.com/news/uk-politics-48711077
If true this fully explains their idiotic enthusiasm for a no deal Brexit and creates a significant question mark about how accurate is the gauge of party members for their electoral support. It is at least partially true, such large shifts in membership is by definition self-selective.
McHrozni