Some ideas based on 3Cs that might help:
Form a small core of enthusiastic organisers;
Find a base for a junior club;
Form links with some local primary schools;
Encourage local primary schools to start chess clubs;
Offer manpower to help run these primary school chessclubs;
Run some competitions for these primary schools to bring them together;
Involve parents - they are far more important than teachers these days (but the Headteachers' cooperation is vital, since they are the “gatekeepers†and also hold purse strings);
Don't teach beginners; invite youngsters of a suitable standard to attend your club, which becomes the basis of a centre of excellence;
On club nights, use the rule of thumb: 10 per cent coaching - 90 per cent play;
Have faith that quantity will eventually produce quality;
Identify any real talents and move them forward quickly - these become role models and feed back quality and confidence into the project;
Form a town team to enter EPSCA team competitions if there isn't one already;
Enter a team in a local adult league as soon as that becomes realistic - the initial team should include at least two adults.
I'm sure I've missed out some important things.
You might also find this helpful, although it's overdue an update:
http://www.btinternet.com/~cccs.chess/C ... aching.htm