Hi,
Merthyr Tydfil Anglers have a stretch on the Taff from Merthyr to Quakers Yard, their website is
www.MTAA.co.uk
Opreys have from Cilfyndd to Upper boat, their website is
www.ospreyffa.co.uk, Cliff Harvey angling in Cilfyndd does permits at £30 (I think)
Further down on the Taff is Fynnon Taff waters but I'm not sure you'll get a season ticket as there is a waiting list.
Garry Evans Tackle in Cardiff could also give you info on day tickets for the Taff phone numbers 02920 692968 or 02920 619828.
Hope this helps.
---------- Post added at 09:43 PM ---------- Previous post was at 09:38 PM ----------
For further advice on what flies, river conditions and catches on the Taff have a look through these following posts:
River Taff, Cardiff
Taff today:
They are updated pretty regular, anything you need to know just post the question and somebody will usually guide you in the right direction.
All the best Keri