Hi Fred,
I'd love to see the photo's - with so much emphasis on carp nowadays, it's very rare to see people targeting the big roach and rudd.
Tarn is definately worth a go, especially as it's quiet. The fish are growing well with the largest of the fish now approaching 30lb and all the other fish at least doubles. They fight incredibly well and the Priory strain fish are absolutely stunning.
The dam wall is being repaired at the moment, so the water level has been dropped, but give Pav (Acting Head Bailiff @ Tarn) a call - his number's in the handbook to find out what it's fishing like at the moment.
All the best, and well done on the Roach.
Rob