Buckinghamshire
"Ken's Paper Collectables" in Newport Pagnell now only stocks printed ephemera and "The Cottage Bookshop" in Penn was used as a location "Midsomer Murders". Otherwise, I'm afraid I have no personal knowledge of the other shops in the county.

Oxfordshire
Now that's more like it, lots of bookshops. However, the city of Oxford contines to decline as a bookselling centre, with the closure of Unsworths and the imminent relocation of Classics Bookshop to Burford. Out of town, "Jonkers Rare Books" offer enticements capable of emptying the deepest of pockets.

Berkshire
If it's books on art and architecture your after then "Wyseby House Books" in Kingsclere is the place to go. The long established "Invicta Bookshop" in Newbury had an interesting general stock last time I visited.

Hampshire
Apart from the "Petersfield Bookshop" and the "Abbey Bookshop" (sadly now closed) in Southsea, TheBookGuide's recent experience of the Hampshire bookshops is scant. Years ago I used to visit Southampton and was sorry to here about the closure of the Shirley Bookshop.

Dorset
Dorset boasts one of the few successful multi-dealer bookshops at "Words Etcetera" in Dorchester. Lyme Regis has recently become something of a magnet for book sellers, while Weymouth and the Poole area remain popular. To the north the shops are more thinly scattered but "The Antique Map and Bookshop" at Puddletown is a must.