The number of directors banned between 2003 and 2004 fell to a five year low of 1,527, but Nick Wood, a partner with the firm, said the change was a result of the reduction in company insolvencies.
They fell 20%, from 3,984 to 3,290 over the same period, the Financial Times reported.
That helps to explain the drop in disqualifications, which had previously stood consistently at more than 1,700.
The period also saw an 11% rise in the number of out of court disqualification orders, which now stand at 84% of the total.
Mark McMullen joins the private client services team from Smith & Williamson
Merger between Clear & Lane Chartered Accountants and Magma Chartered Accountants was finalised on 3 February
BDO has taken its new partner intake to 23 during the first half of its financial year, including the appointment of five partners in five weeks
The firm reports 7.6% global fee income growth for the year ending 31 December 2016