Well, the BHC official have retained my covering letter and visiting card, but have returned all other documents I got back. I am very glad... now I can start making departure plans!
Now that I have got my entry clearance to UK, I can confidently say that this blog will give you a good idea of how to apply for the working holidaymaker visa. The words of advice here come from my own experience - I have compiled all the steps here for your reference. Hope they will help you in your application process. ALL THE BEST!