Bradburn is the fifth high-profile resignation from PCB since former Test captain Ramiz Raja took charge as PCB chief.
The PCB suspended the Northern Cricket Association player under Article 4.7.1 of its Anti-Corruption Code, which means he cannot take part in any cricket-related activity pending investigation.
Appearing before the Senate Standing Committee on Inter-Provincial affairs on Thursday in Islamabad, Ramiz said it was time for the PCB to reduce its dependence on funding from the ICC and start tapping the local market.
Ahmed, who has a foot in both camps after serving as England's spin-bowling coach in 2009-2015, voiced his frustration to AFP after English cricket chiefs controversially cancelled tours for their men's and women's teams next month to cricket-crazy Pakistan.
PB chairperson Ramiz Raja has expressed displeasure over the standard of pitches seen so far in the national event at the Rawalpindi Stadium.
New Zealand abandoned and England pulled out of scheduled assignments in Pakistan in quick succession citing security concerns. England also gave players' mental health as a reason for the withdrawal.
PCB gets food bill of Rs 27 lakh after security team’s biryani feast during New Zealand’s short stay
PCB reportedly was handed a food bill worth Rs 27 lakh food bill, which was consumed by the security team of over 500 officers deployed by Pakistan.
The ECB on Monday withdrew its men's and women's teams from the tour of Pakistan, citing increased concerns about travelling to the region.
“I am severely disappointed in England’s withdrawal but it was expected because this western bloc gets united unfortunately and tries to back each other,” Ramiz said in a video message.
England failed a member of their cricket fraternity when it needed it most, says PCB cricket chief Ramiz Raja
Pakistan cricket chief Ramiz Raja said England had failed his nation's cricket team by pulling out of its tour next month.
'Disappointed with England', 'Ridiculous': Twitter reacts to England's decision to withdraw from upcoming tours of Pakistan
England withdrew their men's and women's teams from next month's white-ball series in Pakistan citing "increasing concerns about travelling to the region".
PCB 'explored possibility' of inviting Bangladesh, Sri Lanka for short tours following NZ pullout, says Wasim Khan
PCB CEO, Wasim Khan said Sri Lanka Cricket (SLC) and Bangladesh Cricket Board (BCB) showed a willingness to play in Pakistan but there was little time in hand for them to send their teams.
PCB chairman Ramiz Raja laments 'pressure created on Pakistan cricket' by New Zealand's hasty withdrawal
New Zealand abandoned its tour of Pakistan minutes before the first match on Friday in Rawalpindi after its government issued a security alert.
The Black Caps called off their first Pakistan series in 18 years with Wellington's backing on Friday just before the first one-day international was due to start in Rawalpindi.
Pakistan Cricket Board CEO Wasim Khan confirmed that a chartered flight will be coming on Saturday to take the New Zealand team.
Pakistan vs New Zealand: Visitors' decision to unilaterally pull out 'frustrating,' says PCB chairman Ramiz Raja
New Zealand cancelled the tour just before the start of the first ODI, citing a security threat which the host board insisted did not exist.
New Zealand Cricket said they received a security alert from their government and made the decision to cancel the tour moments before the scheduled start of the one-day international series in Rawalpindi. Both teams stayed at their hotel.
The increase in the monthly retainers will now allow domestic players in First-Class and Grade-11 competitions to earn between PKR 140,000 to PKR 250,000 per month.
Raja, who was formally appointed into the role on Monday, also said that PCB was in no hurry to resume bilateral ties with BCCI as their priority was the country's domestic cricket.
ICC T20 World Cup 2021: PCB appoints Matthew Hayden, Vernon Philander in coaching roles for for mega event
The appointments of Hayden and Philander come just a week after head coach Misbah-ul-Haq Misbah-ul-Haq and bowling coach Waqar Younis resigned from their respective posts after two years in the job.