Following on from Andrew's post yesterday, I have also found some it difficult to match some mines found while cutting shrubs in my garden with the info on the British Leafminers and other such sites. However the first (on bramble) looks like a good fit for Stigmella aurella? The next one (on elm) has an active caterpillar and is possibly Stigmella lemnicella? The third (on hazel) could be Stigmella microtheriella (as suggested for Andrew's leafminer), but does not appear to show the centralized frass line which is said to be characteristic of this mine. The last (also on hazel) could possibly be Ectoedemia minimella - the caterpillar was in the central oval area and is also shown isolated.