​c2c operates a fleet of 12 X 720 and 74 X 357 vehicles across the Essex Thameside network.​ This concerns the 357 fleet.​ The units have been in service since approximately 2000.​ Some previous upgrade/refurbishment of the total Fleet took place around 2016/2017 broadly including but not limited to the following areas; Flooring, heater panels, fixtures fittings, seats, cab floor, toilets refreshed. In addition, in 2016 these Units were, as part of a project called ´Intelligent Trains´, fitted with Intelligent Gateway (Router), antennas, Ethernet backbone, CCTV, OTDRs, passenger information points, passenger Wi‑Fi access points and Ethernet switches passenger information points.​​ c2c is now considering its options in relation to refurbishing and upgrading the units to make them more aligned with future passenger and operator expectations.​ Areas to be considered in potential scope may include but are not limited to:​ - Interiors: Floors and covering, seats and coverings, toilets, panels, surfaces etc.​ - Cabs: general condition and power/USB outlets​ - At seat power considerations​ - PIS/Media Screens - FF and interior CCTV - Automatic passenger counting - Remote (Cab) passenger communication reset functionality - ASDO/SDO​ - Air conditioning systems reliability improvements - In addition, c2c currently operates a platform-based DOO legacy system which dates from 2000, on an East -West route, views are solicited as to whether it would be more cost effective to install an in cab modern alternative as platform cameras and mirrors approach obsolescence. Options should be particularly aware of installation and performance risk.