I live in North Weald (near Epping) and my rides often take me in Bishops Stortford direction (through the lanes). I avoid Harlow at all costs!!
At the moment I've just started a new job so it's diffidult for me to commit to anything other than a long weekend ride. My routes often take me round the Matching Green, Hatfield Heath, Hatfield Forest area, albeit that I do head towards London, aiming for High beach if I fancy some hills!!
Rides are normally about 16/17mph and I probably won't do more than 45 miles until march kinda time, so if that sounds about right and you want to meet up, then PM me.