I didn't know moths could swim, until yesterday. I don't suppose they can do it for long, but there was one in the bath zooming around like Rebecca Adlington, only not in such straight lines. I fished it out and was interested to see that it then adopted this butterfly pose - wings high above the back which moths very seldom do - presumably to make it easier to dry out. The second, smaller picture, shows a sideways view.
I think it's a Rustic of some kind. Your dead average brown, boring moth. Penny and I were on a marvellous excursion, launching A Good Year for Blossom, a collection of Guardian Country Diaries by women (ideal Christmas present etc, see link to books...thanks). We stayed at the former home of one of the diarists Gwen McBryde, Dippersmoor Manor, near Hereford. It is now an outstanding B&B with marvellous hosts Hexie and Amanda Millais (H is the great-grandosn of the celebrated artist). Go there! http://www.dippersmoor.com/ The third pic is of a pretty litte Magpie moth which also lives at Dippersmoor.