Ok. I've got it. The book is by Seumas Milne and is called The Enemy Within: Thatcher's Secret War Against the Miners, and it seems to be a pretty damning critique of the roles played by MI5, the Special Branch etc. Moreover, SM is a highly respected journalist which means that his conclusions are probably well substantiated.

Unfortunately, my local library doesn't keep a copy (shock, horror. Well I never!) and I don't feel I can justify buying any more books at the moment, especially having withstood the tides of Christmas. But if anybody can tell me what it says in relation to the allegation about soldiers in police uniforms, I'd be glad to know.

BTW., my local library may not carry SM's book, but they do carry a surprisingly large selection of books on or about or by her, including her autobiography.

They also stock a nice bit of entertaining late night reading by some Austrian or other called Adolf Hitler. let me see now. Ah yes, that was the name of it, Mein Kampf. Something about kampfing I think.