In Lightroom all while holding shift, I used the letter X to discard an image and the letter P to flag it- this created my first selection (as you can see above- my flagged images).
After the previous steps, I went through the flagged photographs, rating them from 1-5 stars one by one. Some were very similar so I compared them and got rid of most.
As the final step, I chose my favourite images of all and using Lightroom I made adjustments- surprisingly after editing them, some of the images rated two or three turned out better than some of the ones rated four or five.