Mr. Tony Smyth:

In terms of drone technology, I do not think it was widely available - it may have been in its infancy - at the time when we surveying for the programme. We used drones to survey flood extents in the last winter floods, which helped in terms of data collection. We have moved to GPS surveying. We are informed on these aspects by the service providers that we engage to undertake the surveys, who seek to be at the cutting edge of what is available and reliable in terms of the gathering of accurate survey information.