The start of an orchard ?

This morning Chris and I went to Aldi and bought two apple trees, a Braburn and Bramley.  I have two large pots with nothing in them and a large bag of compost doing nothing, so other than the £3.99 each for the trees I thought they were worth trying to grow.  My gardening skills these days amount to "it has two chances" which means whatever I plant will either grow or it wont. I do not have the time or energy to spend long in the garden so everything has to take pot luck, and I must admit most things do OK left to their own devices.  We had a really bumper crop of raspberries last year and even in the hottest weather I did not water them once, they were planted with their roots under polythene and this was covered in a bark mulch.