Over the last half century, North London’s Hexagon has established itself as one of the United Kingdom’s largest BMW dealerships, but company founder and chairman Paul Michaels’s true passion has always lain with classic cars. Now, in celebration of its 50th anniversary, Hexagon has announced that it will cease selling new cars to focus entirely on classic-car sales through Hexagon Classics and the newly formed Hexagon Modern Classics, which opened a dedicated showroom in Tottenham, London, earlier this year. …