Thank you for your for replies
Do you know how I might be able to contact the parents of children who go back and forth on the Eurostar? For instance, I can have my child taken to St Pancras Station by taxi from the school in the Guildford environs. This will bypass the train to Waterloo station and underground to St Pancras. But the key problem area is that short unaccompanied walk from the taxi into the station and to the Eurostar section. Anything could go wrong.
I would be grateful if you could point me towards someone in the same position. I could leave my email for instance.