In addition to the good advice of signing up with more and ever more MSCs, you might try the aggregated job boards. For example, JobSlinger is free and lets you conduct searches for specific areas. They will not show you all available shops because all MSC's do not post their assignments there. Nonetheless, you might pick up some gigs in designated areas, once in awhile. If you see a new or familiar MSC, so be it.
My garden in England is full of eating-out places, for heat waves, warm September evenings, or lunch on a chilly Christmas morning. (Mary Quant)