Well, I've quickly scanned the music magazine's article cutout I've got
in which the breaking up of the page three trio was announced.
It is a clipping from a dutch magazine (believe it was called Music Express)
which I came across quite a while ago.
It is not a great scan but the source material is quite old and in not too
great shape.
I've highlighted the bit where the members of the trio are mentioned by name.
I must confess this is my main source for believing Gillian being part of the
trio.
I've managed to find 1 of the other to pictures I mentioned above but the
scan I've made of that needs more work in order to remove all the scratches.
FYI the blurb in the above pic basically mentions the page three trio
breaking up because their song did not make it into the charts.
Felicity is quoted as blaming the public for not believing the trio could
actually sing at all and also because of the attitudes of both Stefanie
and Gillian.