Just spent the weekend getting all the insualtion into the floor along with the damp course membrane to protect the insualtion against damp. Final components to go in was a thin layer of plastic sheet followed by the underfloor heating pipes. All the pipes lead back to the manifold which is essentially a series of valves controlling the amount of hot water allowed to pass through the pipes. Next stage will be to bring in the team to pour the concrete floor slab.
For ease and speed we decided to go with a liquid screed which should be poured in the next week by which time we should be done with the all the pipes.