Will pilots please STOP sqwauking INDENT on making your initial call and first contact with LONDON ATC sectors! You may think it's all routine and that you're being helpful, but if you do so you will invalidate the sequence we are expected to follow to positively indentify new contacts. We have MANY ident pulses going off all over the radar screen from aircraft on different sectors and we must be sure that YOU are the one who has selected that code AND is sqwauking ident coming onto our frequency. Please wait to be asked to sqwauk INDENT. Many thanks.
