Trying to contact Romford mail centre directly.

I shipped a parcel on the 25th of August and stupidly forgot to put a return address on the parcel itself however it is on the item inside the box. I myself printed and stuck the CORRECT ADDRESS on to the box so I would assume that should still be visible.

The post office have typed the postcode in wrong and it has made a few trips from Romford to Bethnal Green and a trip to White Chapel and has now been scanned at Romford on the 2nd, the 4th, the 4th again, the 6th, the 7th and again on the 7th. I spoke to a customer service agent on the 2nd who said they would send emails to Bethnal Green and White Chapel with instructions to redirect and he took my return address and said if it could not be delivered it would be sent back to me.

Is there a way to contact Romford mail centre directly? Could the recipient go to Romford and retrieve it?

The item is very sentimental art and I have spent close to £100 if not more in materials alone and so so many hours have been spent on this. I am heartbroken and I would appreciate any advice you could give. I know it's my fault for not putting a return address on it before somebody other than myself took it to the post office but I would be absolutely devastated if it could not be located and returned.

Thank you in advance for any help or advice you could give.