Hi Dazza and welcome to the forum.
Hope you have a great weeks fishing.
This season I have been out most weekends fishing and whilst I'm no expert I get the feeling there are fish everywhere with no particular hotspots at all. St Bennets is good for Roach and Perch, Fleet Dyke also. I believe around Barton Broad is good too but other than the opening day have not tried it.
More importantly is the bait you use. This year I have caught better fish when using bread, corn or luncheon meat......worms, maggots, caster just catch the smaller fish. You may wait longer for the bites but the result is worth it. I was moored next to a boat earlier in the year at Salhouse and the guy was fishing with wheat.....had plenty of Roach around 6-8 ounces....ok, not massive, but was picking off the better ones.
Perch wise, a lot has been made of this new thing , "drop shotting" I've never tried it, but want to and will do. Look it up if you don't know what it is.
Also, don't overlook that decent fish can be caught right up next to the quay heading, you don't always have to lob a feeder mid river.
At the moment, personally, I would not fish anywhere above Salhouse , very clear.