Male house sparrow. Less common than they were but still plenty about.
Female house sparrow.
This bird is quite common in gardens but few people notice it because it tends to skulk under bushes and it looks like the above house sparrow. In the past this bird was called a hedge sparrow but it is not a member of the sparrow family. It is, in fact a dunnock.
This is a sparrow hawk. As is implied in its name it frequently feeds on sparrows. It is quite common although we don't often have them in our garden. This one was after the birds on our bird feeders.