Having never seen a newlet, since a few days ago, yesterday realise that there are lots in the shallow end of the pond. You have to really get your eye in to see them they are so small. You do have to wonder how they survive with all the underwater preditaors there are. I got worried seeing a Great Diving Beetle lavae moving about. However, oddly this year I have only seen two of the beetles, so obviously a bad year for them - thank goodness. The Newlets are very difficult to photograph (I don't have the right equipment), not helped by the sun shining on the water but here is a Newlet:)
My newts are Palmate Newts. There are three native newt species in the UK; Smooth Newts are the most common. Look at the size and skin type to help with identification. Of the three native newt species, Smooth Newts are the most commonly seen, though Palmate Newts look very similar. Maybe look up each and see which have dark newlets.