It seems to be a common perception that GATCO is trying to compete with the union. The way I see it, and Ive stated this in the last page, is that prospect will negotiate T's and C's and provide some legal representation. They do not have any remit to promote the professional aspects of being an ATCO.
GATCO is a completely different entity and exists to directly represent and promote the Air Traffic profession in the UK.
Spamcan