I suggest you write to
UKBApublicenquiries@ukba.gsi.gov.uk
When you have written the email, you will get an auto-generated email that has a section about outstanding applications.
It has the followingexerpt;
1. Outstanding Applications
For data protection reasons, we are unable to respond to enquiries about individual cases by e-mail. UK Border Agency will contact you if further information is required to complete your application. If you sent your application by Recorded or Special Delivery, its receipt can be confirmed on the Royal Mail website at:
http://www.royalmail.com/portal/rm <BLOCKED::
http://www.royalmail.com/portal/rm>
If you make an application before your authorised stay ends, your existing immigration status will continue until your application is decided, even if the decision is not made until after the end of your permitted stay. If your existing visa or other permission to stay here allows you to work, you can continue to do so until your case is decided.
which you can show to your HR.