The Avon (Pronounced A'an)
If you're looking for fishing in July, as someone mentioned, you might battle to get a beat on the Spey. However, despite being a relatively small river, the Avon, which is the biggest tributary of the Spey, fishes particularly well in July. I work in a hotel which has fishing on the Avon, and spend as much time as possible on the river. July was the river's best month in 2004, and provided that there is enough water in the river (being a spate river, it is heavily dependent on a decent level of water) it can provide superb salmon, grilse and seatrout fishing.
I hope you find what you're looking for.