John Walker, from Mancot, a BNP member of Hawarden Community Council, says all party members are encouraged to read The March of the Titans: the History of the White Race.

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>> Location of BNP's Deeside business base revealed

The book's author is Deeside man Arthur Kemp, himself a member of the far-right party.

Mr Kemp, however, denied that the book was recommended party reading, insisting there was no "official party directive" on reading material.

The book has faced accusations of historical inaccuracy.

Anti-fascist magazine Searchlight has strongly criticised the work, claiming it is "full of pseudo-history", but Mr Kemp has dismissed the controversy surrounding his work.

He said: "It is a history of the white people.

"No-one would criticise a book about the history of the American Indians or the Chinese people."

The book is stocked at the BNP's national merchandising headquarters in Deeside, where Mr Kemp has been working in a marketing role.

Called Excalibur, the facility produces party memorabilia including T-shirts, books and badges, which, according to the official BNP website, bear slogans such as 'No Immigrants – No Bombs' and 'England: love it or leave it'.

Party leaders had refused to reveal the exact location of Excalibur, claiming there was no need as the store is operated via the internet and bulk mailing, and is not open to the general public.

But last week Searchlight revealed the facility is based at the Evans Business Centre on Deeside Industrial Estate.

The BNP has been branded racist by mainstream politicians, who say that they are unhappy about the party's operation in Flintshire.

Carl Sargeant, AM for Alyn and Deeside, said: "I am disappointed to hear that the BNP are using premises in Flintshire to distribute literature and merchandise that promotes aggression towards minority groups.

"It is a long-standing belief that myself and Alyn and Deeside MP Mark Tami have been up-front about, that there is no place for the BNP in Flintshire or in the UK."