With lucky timing (from the manufacturer's point of view), a magnificent black box packed with purple tissue has also just arrived in the Guardian office.

How much energy is wasted in the Guardian offices?

Is this something cooked up in the Guardian offices, I wonder?

A straw poll around the Guardian office showed that almost no one did.

We'll also arrange for all your mail to be delivered to the Guardian offices in Washington, where it can be sent to you here.

If you need me for any reason, just contact the nearest Guardian office and they can reach me anywhere.

This concludes my comments today, and I will entertain questions submitted in writing to the Guardian office.

Based at the Guardian office in Kings Place, London, the workshop ran for three days.

And on Wednesday he'll be heading into the Guardian office for a live Q&A with readers.

At the moment, it is moored outside the Guardian offices in London.