These traditional English hunting horns still being handmade by Henry Keats. The Berkeley & Beaufort are the names given to the designs when HY Keats took over the manufacturing. The previous owners ,Swaine & Adeney called the equivalent styles "Cotswold" (Beaufort) and "Countess of Lonsdale" (Berkeley). The tone of the horn is dependant on the length , size of bell and the width and depth of the mouthpiece.
The Beaufort is the highest pitch and has the wider mouthpiece. This type of horn is generally 8 3/4 inches long with a 1 3/4" bell diameter
The Berkeley has a narrower bell , smaller mouthpiece and deeper tone. This horn is slightly longer at 9 inches with a bell diameter of approximately 1 1/2"
The Goodall has a larger bell, is longer than the other two and has a larger & deeper mouthpiece. This horn has a deep tone and will carry well in woodland. The choice is dependant on the tone and how the aperture of the mouthpiece will fit ones lips. This horn is usually about 9 3/4 inches long with a 2" bell diameter.