Hi Guys,
first of all, I would like to thanks the members and moderators on this forum for being incredibly helpful with all the queries ..you guys have been amazing !
Just thought of sharing my experience with super priority application.
I had applied on-line on dec 11 (my first visa was issued on jan04, so was eligible after dec07 as per 28 days rule) , but only could find appointment for yesterday ( jan03) at Croydon.
I had uploaded all the documents prior , but they scanned passport again at the centre. The process was easy and didn't take much time. I had appointment at 8 am in the morning and left centre around 8:40 ish.
Around 2 o clock in the afternoon, i got an email saying it was granted and biometrics and letter will follow. Its been a big relief , now waiting for the BRP. I probably got lucky , in the sense , it was looked into on right time , and hopefully after initial hiccups , they are getting better at it. I hope , they understand the reason why people pay for super priority service.

I wish you all the best, with your applications ...Good Luck !!