of 233 Bristol Street, Birmingham
See Gilbert James Allday and S. Darby
1912-13 P. D. A. (PDA) was an early British make of cyclecar fitted with V-engines from Blumfield, JAP or Precision. Only 12-15 made.
1913-1917 For a list of the models and prices see the 1917 Red Book
1913 Resolution to close the company. S. Darby Secretary.[1]