I've given up on my mates, a couple have bikes but would probably need to plan in a ride a few weeks in advance. I can't exactly get out very often but when I can I just get out on my own. A very large majority of my riding is solo, about the only time i ride with company is the FNRttC outings.
I tend to ride Solo a lot although, recently, my pool of fellow riders has improved and we get out together more. Having enjoyed this, I have signed up for the Swansea to Crystal Palace charity event in May. The group training will be as enjoyable as the event and broaden the group I ride with hopefully.