What is the reference number?

[OrangeSceptre]

On the form for PBS, it is asked to provide a reference number on the entry clearance or visa....
Im on a hsmp and the visa on my passport is titled Residence Permit, what is the reference number that I need to provide ? Any guidance is much appreciated.
Also just to point out, I had entered the UK on a WP and then switched to a hsmp, should the numbers on top(in red) on this entry clearance be used as the reference number?

Regards
OrangeSceptre

[tvn_ramesh]

Yes, you shd enter the No. in RED on the top right corner of ur WP Visa..

[OrangeSceptre]

Thanks tvn_ramesh