Stanley Gibbons catalogues were always a must-have for stamp collectors. They are less essential now than they used to be before the internet but I still like having a printed catalogue for reference when managing my collection. I collect Great Britain stamps. Earlier years' editions of 'Collect British Stamps' had design flaws e.g. no index, no detailed explanation of jargon. The 2011 edition corrects this. There is a good introduction explaining the layout of the catalogue, the definition of specialist terms used by serious collectors, and an index to find stamps by description (formerly you had to flip through the catalogue page by page to identify a stamp by matching it to the illustrations). Sadly, the index is amateurish and fails to list all the stamps adequately e.g. the 1988 Australian Bi-centennial set. They need to employ someone qualified to index publications and have a professional index produced for the catalogue for this to be a really useful feature but it is a step in the right direction. In the 2011 edition, Stanley Gibbons also offer an explanation of their pricing policy which, in my opinion, is not convincing but it is at least an attempt to explain figures which otherwise seem to have been plucked out of thin air (the prices in the SG catalogue are always ludicrously over-estimated and therefore useless for indicating the true market value of stamps so I just ignore the price information and focus on the other details). Every Great Britain commemorative and definitive stamp is either listed or described in the catalogue in order according to date of first issue. The 2011 edition is in a larger format than earlier editions and printed on strong, clean white paper which will stand up to a lot of use. It looks like SG has woken up to the fact that they no longer dominate the market, especially now that so much stamp trading is done on-line, and thus have to do more to win and retain customers. They have upped their game and stamp collectors like me are benefiting because of it. Cheers! I like the 2011 edition better than previous editions and give it a higher rating all round. Well done, Stanley Gibbons. Nevertheless, I find the SG catalogue over-priced and usually buy not the current year but the previous year which is always available at a discount of up to 50% for good copies from 2nd-hand book dealers. I bought my 2nd-hand 2011 catalogue from a dealer on Amazon. Nice one.