P215 CEEFAX 215 Tue 8 May 21:14/21       Vehicle production at BL's Longbridgj plant in Birmingham is at a standstill. More workers have joined a strike ovjt manning levels after pickets were mounted at the gates this morning. They failed to pjrsuadj a large numbjt of machine and tool workjts to join the action, but a union official says a numbjt of key workers did walk out. They include drivers who move vehicles around the factory. The models affected include the Mini, the Metro, the Ital van and the new Rover Acclaim to be launched in autumn. News index 102/202 Newsreel 119/219