An update on posts 239 & 240 and the title comes from a BBC report:
A mother and daughter, who were part of the UK's first all-female terror cell, have been jailed over a planned knife attack near the Houses of Parliament. Rizlaine Boular, 22, who was going to carry out the attack, has been sentenced to life imprisonment with a minimum term of 16 years. Her mother, Mina Dich, 44, has been given six years and nine months at the Old Bailey for helping her daughter. The pair pleaded guilty to the preparation of terrorist acts.
Two others will be sentenced later (a sister and a male).
Link:https://www.bbc.co.uk/news/uk-44496433

A slightly more detailed report, which mentions:
The plot was foiled by counter-terrorism police and MI5 agents, who bugged the family home, recorded phone conversations and posed online as Islamic State operatives.
Link:https://www.theguardian.com/uk-news/...on-knife-plot?