Thanks everyone for the comments.
For the record I am using a Canon 60D.
Picking up on Zaf's comment, I think there seems to be a colour saturation factor at work although I did not PP this. The actual colour of the flowers is more lipstick pink than red, at least when you stand back from them. Up close and with some added light the colour seems to intensify.
Chris, here is another of just one bloom...
Again with 70mm Sigma Macro lens, f7.1 for 1/8 sec flash assisted, ISO 400.
As always with macro shots DOF, one can play with the focus subject all day...
Victor.