Starting all mocks:

def mockServices = testRunner.testCase.testSuite.project.getMockServiceList()
com.eviware.soapui.model.mock.MockRunner runner

for (mock in mockServices) {
   try {
      log.info "Starting ${mock.name} ..."
      runner = mock.start()
   } catch (Exception e) {
         runner.cancel( "Could not start mock service ${mock.name}" )
   }   
}



Stopping all mocks:
def mockServices = testRunner.testCase.testSuite.project.getMockServiceList()
for (mock in mockServices) {
	if (mock.mockRunner) {
     	if  (mock.mockRunner.isRunning()) {
      		log.info "Stopping ${mock.name} ..."
      		mock.mockRunner.stop()
     	}
	}
}