When value contains "&" passing values from one form to other is not working

With regards to the first point, if you go to www.PeterAshleyCarParks.com and choose the Park, Ride & Return Meet as your parking service and get a quote, the service field on the http://www.peterashleycarparks.com/booking.html form doesn't display the whole thing, it only displays 'Park, Ride' and not the whole parking service.

I have tested your forms and I was able to reproduce mentioned issue. 

After testing I noticed that value "&" from option "Park, Ride & Return Meet" can not be passed to other form and because of that "& Return Meet" part is missing from your second form.

You can fix this issue by changing "&" with word and inside of dropdown options in your first form. 

Here is my demo form: http://form.jotformpro.com/form/52515741658965? 

Hope this will help. Let us know if you need further assistance.