Eyed Hawk Moth Larva?

There's always something interesting to find in Forest School. Today I was working with a group making a giant cuboid from sticks. (The picture will be on my blog) while the next group were making mini rafts to float a tennis ball across some water. That's when this little fellow turned up and after searching a bit this is the closest I can come to identifying it. Have to get some more books out tomorrow. Finally we were back to learning about making fires with the youngest group and cooking marshmallows and making hot chocolate. "Forest School is the best lesson ever."said one.