Should I come clean over booking a company courier for personal use?

Work ethics is a fortnightly feature in Guardian Work where a reader submits a workplace dilemma and asks for your help. A selection of the best answers will appear in Saturday's paper. (And if you have a dilemma you'd like to share, anonymously, with our readers, please email us.) This week's question A few weeks ago my partner called me at the office as she was locked out of our house. We live in a different town to where I work, so I sent my set of keys to her using a company courier. I am now worried that someone will find out. Should I own up, make up an excuse or hope that no one notices? What are your thoughts?