speed limit signs are showing the wrong limit

Tera

I think that my TomTom is showing the speed limit on the road signs in kmp instead of mph , anyway it's incorrect and does not match the road signs. Is there a way change it in settings, although I'd thought it should be picking up the right speed limit in miles from the default setting ( UK)?

Thank you in advance

Niall

@Tera

Make sure the units are setup correctly, see page 38 of the manual http://download.tomtom.com/open/manuals/non-LIVE/refman/TomTom-EU-non-LIVE-RG-en-gb.pdf