Following the “Bedbug Express” that forced London–Kent trains to a halt earlier, there’s fresh data on Britain’s bed bug problem: UK media report that bed bug cases in some London areas are up roughly 40% in 2026 versus 2025, with pest-control callouts doubling. Experts say some bed bugs have developed resistance to conventional insecticides — a key driver of the resurgence.
The numbers: how bad is the rise
- According to Metro data first published in July 2026 (re-circulated by UK outlets in early October), one London borough had handled 155 bed bug cases in the first half of 2026 — 52 in June alone — up about 40% on the same period in 2025 and about 50% on 2024.
- James Rhoades, head of heat-treatment pest firm ThermoPest, says callouts have doubled on last year, with many cases referred to him only after conventional chemical spraying failed.
Why they won’t die: resistance
- Bed bug expert Professor Chow-Yang Lee says insecticides are finding it harder and harder to kill bed bugs, describing this as a major factor in the resurgence.
- That doesn’t mean every bed bug is immune to every product — but it explains why a “grab a can of spray” approach can’t handle an established infestation, and why haphazard spraying can scatter the bugs and make the spread harder to contain.
- Paul Blackhurst, head of Rentokil’s technical academy, calls bed bugs “silent killers”: active at night, hidden in bed-frame crevices, often a whole army before anyone notices.
Is the Tube helping them spread?
Social media is full of claims of bed bugs spotted on the London Underground, making “Tube transmission” a talking point. But there is currently no confirmed evidence of a large-scale infestation on London public transport. Just as with the earlier “Bedbug Express” incident — where Southeastern confirmed only two drivers’ cabs were affected and all passenger areas were clear — rumour and confirmation are two different things. Stay alert when travelling; no need to panic.
Why Hongkongers should care
University terms and the Christmas run-up send large numbers of Hong Kong students and travellers to the UK; bed bugs love hiding in luggage, and one careless moment brings them home to Hong Kong. Read the travel/hotel bed bug checklist before you go, inspect your luggage on return and heat-treat your clothes. If you do bring them home, How to Treat Bed Bugs Yourself: Correct Steps (Hong Kong) has the full process.
Sources
- Rejoy Health (citing Metro, 2026-10-02) — https://rejoyhealth.com/blog/mutant-bed-bugs-are-spreading-across-london-and-now-the-tube-is-in-the-spotlight
- Tribune Times (citing Metro / Rentokil, c. 2026-10-03) — https://tribunetimes.co.uk/uk/trains-cancelled-after-bedbugs-spotted-inside-carriages/
- LADbible (Metro data background, 2026-07-02) — https://www.ladbible.com/news/uk-news/mutant-bed-bugs-uk-treatment-resistant-903345-20260702
- Brit Brief (quoting Metro data; corroborates 155 / 52 in June / +40% vs 2025 / +50% vs 2024) — https://britbrief.co.uk/environment/climate/mutant-bed-bugs-resistant-to-insecticides-rising-in-uk.html
- Our earlier report: Bed bugs halt London–Kent trains: drivers refuse to board, one service dubbed the “Bedbug Express”
(Written 2026-10-08; compiled from UK media reports. Note: UK media use “mutant” to describe resistant bed bugs, not a new species.)