To be honest, there is no way you can get in on a megadrop via the phone if it is a good product and a small quantity.
As the website is about 5 seconds in advance to the tv sets, this lets you see it is £1 before it is announced on the TV.
What you should do, is log in online, and on every item get it up, and press buy now, and when it hits £1 press buy now! SIMPLES!!
(The phone takes a few seconds to connect aswell....so the really good items will be gone via the web site) -I have a clear idea of what is going for £1, so I dont sit there looking at every product, but I cant tell you what it is, or everybody will do it, and I wont get in on them intime ever again!!