Soda Bread.
12oz plain flour (ordinary, not strong, can be all brown, all white or a half and half mix.)
pot of buttermilk, make up to half a pint with water
0.5 tsp salt
level tsp baking soda
Add the salt and soda to the flour and mix well to disperse. make a well in the middle and add most of the liquid. Mix with a fork, add the rest if it looks a bit dry, but don't make it too wet. Bring together with you hands, but don't handle it more than is necessary. Make into a flattish loaf shape and place on a baking tray. Cook at 200C/180(fan) or gas equivalent, for about 25-30 minutes.
You can use natural yogurt and water instead of the buttermilk if you can't get the latter, but I never find it so successful. Most branches of Tesco have buttermilk, as do Waitrose and many delis.
The only problem with soda bread is that it goes stale more quickly and is useless for making sarnies! Other than that it is great.