"I have worked with Helios on a number of occasions and value their knowledge of the latest developments in ATM R&D and GA impacts in particular. Helios produce quality deliverables on time and to budget, and bring impartiality and appreciation for the multiple air traffic issues impacting the GA community. I have always found Helios to be reliable when working together they have a range of expertise and in recent years they have developed a good understanding of GA across all its activities."