I havent seen 4002 at all yet but 4011 has gone into passenger service.
Happened to be at Ascot Pk this afternoon and hurriedly took the shot below when 4011 worked the 17.03 from ARS.
Another daytime diagram has now become electric leaving only 2 out of 9 worked by DEMU.
An unusual sighting today was that 4001 worked empty from Seaford to City and passed Ascot Pk at 18.10 closely following the 17.36 from Seaford.
Alex C