Difficult weather conditions didn't prevent delegates getting to the hallowed halls of the Royal Society in its 350th anniversary year for yesterdays SfAM Winter Meeting 2010. The meeting covered Mycobacterium tuberculosis and biocides. The Denver Russell memorial lecture was presented by Gerald McDonnell of Steris, UK who set the tone for a day of fascinating lectures with his presentation entitled: "Biocides and public health: the more we look the more surprises we find". To provide a 'taster' of the two afternoon sessions, new treatments for latent TB were described by Douglas Young of Imperial College London. Following this, Ian Hosein of North Middlesex NHS Trust proposed a model based on organisational behaviour for effective biocide use in practice. Following a delicious lunch, two parallel sessions included descriptions of the evolution of TB, as studied using paleomicrobiology, as well as the diagnosis of latent TB. Biocide legislation and resistance were discussed, as was the enduring problem of the tolerance of biofilms to biocides. The Trade Show attendees enjoyed a busy day doing plenty of business during the coffee and lunch breaks and with no snowfall during the day, attendees were all set for a smooth journey home.