Once again, thank you all for your replies.
I guess the Jury's verdict is that we'd struggle to convict Eurotunnel and, to be honest, I am quietly relieved because as 'arthurdent' points out it has been taking up a disproportionate amount of time.
Interesting to note that it has happened to others though, which underlines that we all need to be vigilant when using this service, especially since they seem to have such a poor regard for customer relations. They have told me that they operate a 'no-blame' culture with their staff but it seems to me they also operate a 'don't blame Eurotunnel' culture.
It will be interesting to see the outcome of the enquiry into the recent fire and why one of the trucks involved was carrying a substance supposedly banned from the tunnel. Are they getting slack with their safety policy? When we travelled with them last year they physically checked that our gas bottle was turned off - this year they took our word for it. Makes you think doesn't it....?
Well the clocks go back this weekend so it must nearly be time to get the road maps out and start searching for next year's destination!