I've been doing a little research into the statistics behind coupon use in America and in the UK. Time and time again people are asking if extreme couponing is do-able in the UK.
Firstly you have to consider the definition of extreme. Oxford dictionary defines it as :- http://oxforddictionaries.com/definition/english/extreme.
The most striking this here for me are "reaching a high or the highest degree; very great" and " not usual; exceptional".
http://www.dma.org.uk/toolkit/coupons-shine-hard-times) "Recent research reveals that 61% of consumers use coupons, up from 52% in June 2010. Over a third of consumers (37%) are looking out for promotional offers more than they were a year ago."