does a british citizen need a visa to travel to brazil?

UK passport holders DO NOT need a VISA to go to Brazil! :)) you can stay up to 90 days VISA free access...check wikipedia for the full list (UK passport - VISA free access):

http://en.wikipedia.org/wiki/Uk_passport#Visa-free_entry

*also lookup VISA rules for any country from any country:
http://www.delta.com/planning_reservations/plan_flight/international_travel_information/visa_passport_information/

-Jake