Visiting moth

I found this moth indoors in the morning. It was willing to be coaxed on to an envelope for a photograph before returning it to the garden. Despite the very useful eastscotland-butterflies.org.uk website, I can't identify it for certain. Perhaps a Tawny Shears?

Technical note: to get the moth sharp from nose to tail, I used my camera's focus bracketing facility and then blended the images in Photoshop. However I still didn't get the end of the antennae in focus.