Inexplicable crack in the plaster near the ceiling of our external bedroom wall. What’s the cause?

This is a UK and ROI specific subreddit, r/DIY has a lot of US Specific content, things like products to use, where to get them, laws and codes that don't apply to the UK. r/DIYUK is for UK and ROI specific DIY help, questions and projects.

Has that tabloid article changed the commentary on the sub?

A UK-based subreddit for ‘High Earners, Not Rich Yet’ (HENRY). Aimed at £150k/yr+ earners.