By Green70
Lancashire,
United Kingdom 
The leaves on my tomatoes have a white trailing mark but no insects, the plants were very healthy and have had perfect fruit ripening but something seems to have attacked them
10 Jul, 2021
Answers
If it looks like white or tan random scribbles on the leaes, it's probably a leaf miner.
12 Jul, 2021
Thank you Seaburngirl for your reply but not slugs or snails. Thank you Tugbrethil for your reply yes possibly leaf miner.
12 Jul, 2021
slug/snail damage perhaps? can you add a photo?
10 Jul, 2021