maintenance and access aren't related Peg - it's entirely about the kidlet having access to both parents, money doesn't enter into it (well not within the "rights" anyway.)

my understanding is that the parents each have a right to access their children. they each have the right to privacy from an ex partner. it may be that he needs to provide his address details to someone else in regard to the potential for custodial disputes (if he doesn't return his DD) - but yeah, i think you'll find whether you know his whereabouts or not, you can't deny him access to her