Dr who, suitable for 3.5 year old

[Babyramone]

My wee boy is desparate to see this, do all you fans think it would be ok or is it a little scary.
He likes teenage turtles and cartoons which have a gentle scary thing going on. Mild peril I think they call it
In fact a typical boy.

dd1 happily watches it here, snuggled up with daddy and big bro, she's 3.5, although she doens't like big bro's 'garlick' in his bedroom, she is ok watching them on the tv.