Tile compatible drains/wastes:
http://allproof.co.nz/drainage/tile-floor-wastes
http://allproof.co.nz/drainage/channel/linear-shower-channels
Underfloor heating:
http://www.underfloorheating.co.nz/
Shower screens/glass
Grab rails, Standing aids, Shower seats
http://www.ageplus.org.nz/index.php/productsap/onlineshopap/3/bathroom-products