Hotel Gen 2115 70007 4K96 Traff Pk-Crewe 2222 66540 4H54 Crewe-Traff Pk 2222 70015 4K06 Traff Pk-Crewe 2326 70018 4M99 Soton-Traff Pk 2335 665xx 6xxx Crewe-Salford Crescent engineers