Our experts examine the evidence including screening for dementia, bowel cancer and prostate cancer, and chiropractic, acupuncture and dental scale and polish.
Our smoke alarm lab test reveals six Best Buys and two that fail fire tests and are Don't Buys
EDF Energy and SSE customers need to shop around as companies scrap cheap deals.
Which? reveals the types of inaccessible packaging causing the most irritation and injuries, and examples - from Oral B to Listerine to Brillo - of products.
Fraudsters posing as Green Deal assessors scam money from homeowners. See our tips on how to avoid a Grean Deal scam and find out more about the Green Deal
A Which? mystery-shop of 122 UK high-street pharmacies finds big differences in quality of advice given by companies - from large chains to independents.
Which? reveals six Best Buy blood presuure monitors, and five to avoid
Trained undercover fieldworkers visit 30 GP practices and find huge variability in diagnosis and quality
Which? taste test reveals you don't have to pay a fortune to get the tastiest milk chocolate digestives
Evergreen Energy Solutions has revealed a wood-burning boiler that could mean greener, cheaper energy once you've paid for the system to be installed.