I hope this is useful to someone as I tried searching here some time back trying to find an ironing service. Richelle from Esteam Ironing has been superb and reasonably priced. They pick up a bin bag full of (clean) shirts, sheets etc from my house, take them away and bring them back perfectly ironed and folded a couple of days later.
Evening & weekend collection and drop off, so ideal if you work in the day. I've tried a couple laundrettes / dry cleaners in the area but their normal opening hours make it a pain as I work long hours.
At £1.50 a shirt I think they're about as cheap as is possible. Definitely recommend. (No connection etc.)