UK format for display and email for date field

I have a date field on the form: [date* StartDate] which displays as dd/mm/yyyy in the display field on a desktop screen without any specific formatting.
However, the email generated is as follows:
Start Date:
2013-11-13
I want to get this in UK format as 13-11-2013.
I have tried setting a format for the email using
[StartDate format:dd/mm/yyyy]
but this is exactly what I get in the email, not the entered date.

I have searched everywhere, but cannot find a solution that works, any suggestions please as to how to change it?

http://wordpress.org/plugins/contact-form-7/