Thank you for your reply. I think if it is done using Internet Explorer and Adobe Acrobat the form can be sent using the "Submit" option. I received an email telling me the application had been unsuccessful. They said that I should "open the form in the full version of Adobe Reader" then "Share the document back to us as an Original not a flattened copy and send it to us by email". That seems to be where my problem lies. I'll have another go using IE on the computer of a neighbour and see how I get on. Thank you for your offer of help - I might yet take you up on it.