Page one is a basic data entry with some required fields, ie valid email, valid uk phone number.
Page two, I need it to ensure a number is selected and the input field is filled with a valid uk phone number.
Page three, needs to ensure that selections are made and again that a valid email is used
page four, needs to send a mail holding the information displayed displayed.
Oh, did you want that done for free? Sorry, that is not what this site is for. This site is for getting help with the code that YOU are writing for yourself. So, post some code and I'd be happy to talk to you about its problems -- for free.