I've just got in from work and noticed one but I can't be sure it's the same shrimp but the swimmerets are out and waving a lot and the shrimp has become slightly 'fat' between the end of the tail and where the body widens. I can't get a photo as she's hiding by the heater on the back of the tank but I couldn't spot any eggs in or on her. I will keep a look out though!
17th March 2016
I saw the shrimp in question again tonight that has the swimmerets fanned out and looking a bit wider then normal and snapped a few shots, I've also posted a photo when shes next to another shrimp to show the difference.
Tomorrow i get a new macro lens for the camera so i hope i can start to get some closer photos (once i learn to use it!)