Greg, Dont worry about it. Tick the box on the questionaire that you have had it anyways and give BA Recruitment a call before you send it in for clarification. They will probably ask you to get another check done and a written letter from your GP confirming that all is clear and this will be sent to BAHS (BA Health Services).
But I do emphasise that you should ring recruitment. Hopefully the muppets who were in there when I joined are all gone because they were an incompassionate bunch run by some outside agency but I believe all has changed!!!