potter wasp with caterpillar?

potter wasp with caterpillar?

Observation - potter wasp with caterpillar? - UK and Ireland. Description: This was seen on my balcony garden. I noticed the insect probing and nibbling at the seam of a folded and sealed leaf on my Meadow Cranesbill, apparently as a means to extract the caterpillar inside the sealed area It could be potter wasp but I'm n

This was seen on my balcony garden. I noticed the insect probing and nibbling at the seam of a folded and "sealed" leaf on my Meadow Cranesbill, apparently as a means to extract the caterpillar inside the sealed area

It could be potter wasp but I'm not sure?