I have spent the last week and alot of development time and costs on various javascript and unbounce experts and am still nowhere closer to solving adding custom form field validation to my form.
I love unbounce but its useless to me if i cant do UK postcode and custom phone number validation.
We logged a ticket no: 33254 with Mitchelle Mejia who told us that it is possible to do and that all we need to do is write custom javascript and that many other clients have sucessfully done so.
After a week We have now come to a point where the following internal script