For those of you who know this series, it has been totally re-designed. It is now in hardback, so it now lies flat. The format has been changed to two columns, and is in a larger format. I have many editions from edition 3 (1970); Gibbons have now brought this into the 21st century.
For those of you who specialise in QV GB stamps, this is a must buy. If you have never bought the Great Britain, specialised Vol 1 (Queen Victoria) now is a good time to buy.
Of course the dealers will grab hold of this book... need I say more?