Overview
In real life, the most disproportionate election since the Great Reform Act in 1832, and therefore all of British democratic history. A Gallagher Index score of less than five is considered "fully proportional", and this one scores 23.7. Labour, the winning party, took almost two thirds of the seats on one third of the vote.
The two "breakthrough" parties in recent years took a handful of seats from modest vote shares: Reform obtained <1% of the seats on a vote share of 14% and the Green Party got <1% of the seats on a vote share of 6%.
Notes
Commentary on the 2019 results coming soon here.
Possible government formation:
Using PR by 4-7 seat Districts, governments could have possibly been formed as follows (note that Sinn Féin do not take their seats)...
Conservative majority (333 seats, 323 opposition):
(Image coming soon)