@caterina thanks for your comments and the Fav, Caterina. I’m really having fun, seeing what images I can produce with the iPhone. I bought a set of clip on lenses for £13 and was amazed at the quality, the Macro is especially good.
@cookingkaren I got a set of 3 from Amazon for £13.69. Mpow clip on lens kit, Macro, Wide Angle & Fisheye. I’ve got an iPhone 6 though, so not sure which other models they fit.