Format Textbox Uk Date

In my Excel VBA user form, there are multiple instances of the MS DTPicker control, which feed multiple text boxes. These in turn are linked to named cells on an worksheet. Note at this stage please that dates will not always be required, hence the text boxes. Only the button on the DTP controls are visible, alongside the related textbox.

My problem is that the values in the cells are in US date format and I need them to be recognised in the UK date format. The dates therein must be formatted as dates (ie not as text), as they are used throughout other worksheets for calculations. In the sample below, DTPickerDateOfIncorporation is the named cell (the control source). I know from Roy's responses to other questions on the DTPicker that he doesn't use it - is there a better alternative?