I'd had the idea that I should give something back to some of the people who posed for me last night, and these guys were the only ones I knew how to find. So I printed out the photo and this morning I went and dropped it through what I thought might be the right letterbox.
It cost me a bit in photo paper, and a bit in ink, and a bit for the hardback envelope, a bit for my shoe leather and a bit for my time. But I figured it was worth it.
On the way back, I found a five pound note lying in the middle of my street.