Found this perfect condition brightcut teaspoon which seems to be by David Crawford but wanted to confirm. It’s quite distinct in it’s style, there are some minor elements that would date it to 1770’s if it were a London piece.
Thanks Trev. Here’s a picture of the back as you can see it’s quite flat, wide and has a shallow bend downwards with no pip but flat rounded top. It’s a very nicely made spoon of high quality workmanship.