Maintenance would involve two sets being serviced overnight at Arriva TrainCare in Crewe , with one serviced at Wembley and a spare set kept at Crewe depot .
GNWR says discussions with other maintenance providers are ongoing .
Maintenance would involve two sets being serviced overnight at Arriva TrainCare in Crewe , with one serviced at Wembley and a spare set kept at Crewe depot , although GNWR says discussions with other maintenance providers are ongoing .