This. These trains were originally not fitted with central locking, and being able to (accidentally?) open the door at 125mph is obviously unsafe.
There have been a few converted to more conventional power doors, but the original design is not such that this is easy; it's a pretty major rebuild and it's not clear they're going to be in service long enough to make it worthwhile.
There have been a few converted to more conventional power doors, but the original design is not such that this is easy; it's a pretty major rebuild and it's not clear they're going to be in service long enough to make it worthwhile.