Both really! Ajax are the older more traditional club, Jif are relatively young upstarts and of course had to have a cleaning agent name to compliment Ajax!
They base themselves at Cyclopedia and Ian is the main man, really good chap and very good(too good) at selling me bikes and gear. Went out with them over the winter, they all meet at the same place, Ajax tend to go steady on a Sunday, Jif do not, it's hang on or get spat out the back, v good workout. Haven't been out for a bit as tied to crutches, hope that by the time the weather improves I can get back on the bike.