Help with pond insect ID

Can anyone advise me what the larva is in the picture.
There are several in my pond but this is the first year I have seen them. Initially I thought it might be a Soldier Fly Larva but am unsure.Length about 30mm.


I’d like to see the Observation please - can you link it here?

I think that this is the observatoin!

Please post it at - click on add an observation.