Islamist insurgents retreating from Timbuktu set fire to a library containing thousands of priceless historic manuscripts,

The manuscripts had survived for centuries in Timbuktu, on the remote south-west fringe of the Sahara desert. They were hidden in wooden trunks, buried in boxes under the sand and in caves. When French colonial rule ended in 1960, Timbuktu residents held preserved manuscripts in 60-80 private libraries.The vast majority of the texts were written in Arabic. A few were in African languages, such as Songhai, Tamashek and Bambara. There was even one in Hebrew. They covered a diverse range of topics including astronomy, poetry, music, medicine and women's rights. The oldest dated from 1204.

they exploded the myth that "black Africa" had only an oral history. "You just need to look at the manuscripts to realise how wrong this is."

"Other countries could write similar books – but they would be much shorter. I don't think anyone could match this, although the Americans had a later start and have been working hard on it in the twentieth century."

The only other nation which has achieved anything approaching the British total, Mr Laycock said, is France – which also holds the unfortunate record for having endured the most British invasions.

Mr Laycock added: "One one level, for the British, it is quite amazing and quite humbling, that this is all part of our history, but clearly there are parts of our history that we are less proud of. The book is not intended as any kind of moral judgment on our history or our empire. It is meant as a light-hearted bit of fun." The countries never invaded by the British: Andorra Belarus Bolivia Burundi Central African Republic Chad Congo, Republic of Guatemala Ivory Coast Kyrgyzstan Liechtenstein Luxembourg Mali Marshall Islands Monaco Mongolia Paraguay Sao Tome and Principe Sweden Tajikistan Uzbekistan Vatican City