Over 180 Years of Brewing Heritage McMullens was founded in 1827 by Peter McMullen and since then we have continued brewing in Hertford without a break. The heritage of AK, for example, can be traced back to 1833. We have protected the company's brewing history throughout that time by acquiring and investing in the public houses. Our pubs are run by our managers or business partners and provide an exclusive market for our beers. To this day, the McMullen family remains firmly committed to our beers because they act as the flag' for our business.