Ticket in Limited Speed Hire Vehicle

[woosh]

Hi All,

The missus recently hired a small van (the first time she'd ever hired a vehicle) and she got caught doing 74mph in a 70 limit (dual carriageway). The 74 in a 70 would have been bad enough but it now turns out the vehicle she hired is limited to 60mph for dual carriageway use.
When she hired the vehicle nobody explained there was any speed limitations associated with it and there was nothing in either the vehicle, or the hire paperwork to explain the limitations.
Does anyone have any view on the likelihood of this being accepted as mitigating circumstances, or is this just a case the law saying "....she should have known"?
Thanks,

Woosh!!

[woosh]

Oh, great, that really sucks!!

Thanks for the enlightenment.

[woosh]

Thanks all....depressed