There are still quite a few early stages to be found, including various Coleophorid larval cases. The bonus is that with many of these, the combination of food plant and case structure allow you to confirm these species, and all without recourse to the most cruel cut of all…
I found the following species this weekend, at various sites across East Kent. The larval feeding signs are often quite obvious and betray the presence of the case-bearing larva below.
Coleophora lineolea on Stachys
Coleophora solitariella on Stellaria
Coleophora albitarsella on Glechoma
Coleophora gryphipennella on Rosa