Management of the cereal rusts currently relies on the use of fungicides and varietal resistance. Host resistance can be rapidly overcome by mutations in the pathogen population and for this reason virulence surveys are undertaken worldwide to give early warning on any changes. The UK Cereal Pathogen Virulence Survey (UKCPVS) was established in 1967 following an outbreak of yellow rust on the variety Rothwell Perdix. The UKCPVS currently monitors the wheat yellow rust and brown rust pathogen populations as well as the wheat and barley powdery mildew pathogen populations. A watching brief is maintained on barley yellow rust. In 2011 a new Pst race was detected; named the Warrior race after the variety on which it was first found. Initial tests on differential host lines suggested that the race was another stepwise mutation with an added virulence for Yr7 in addition to a combination of virulences to Yr6, Yr9, Yr17 and Yr32. Other characteristics of this race, however, suggested something different from previous race changes with an increase in telial production seen under field conditions. In addition, this new race was seen simultaneously in multiple locations throughout Europe (www.wheatrust.org) in contrast to the more gradual appearance of new variants seen previously. Subsequent genotypic analysis of isolates (Hubbard et al. 2015, Genome Biol. 16:23) demonstrated that the new race was an exotic incursion. Results presented at the meeting will summarize some of the key changes in the pathogen populations, such as the arrival of the Warrior Pst race in 2011 and the re-emergence of the Glasgow race of the brown rust pathogen in 2014.