A surprise at Titchfield

Whilst chatting to a TH volunteer we came across this strolling across the path, 'rescued' it and popped it up in a tree. Assuming it was 'waspish' I popped it onto what I though was the appropriate Facebook group. Big mistake! However , once suggested it was a sawfly then tracking it down to Cimbex connatus was pretty quick.
Sorry for poor picture.