I've just done my IMC at Norwich and I've not heard of any published approaches for fixed wing at North Denes, though there is an NDB "ND" there. North Denes is quite busy on an average day (the helicopters fly over my house!) and I dont suppose they would be happy at anyone using the NDB for let-downs other than in an emergency.
Norwich to Beccles is no further really than from North Denes and you have the option of NDB/DME on either runway as well as an ILS on 27 if you decide to land there.
The route down from Norwich to Beccles can be followed down the A149 if necessary! If you don't know it, Beccles can be quite difficult to spot in that there are alot of disused and partially built on runways which are unserviceable and the active runway is a short strip of grass with a longer strip of concrete located to the south and east of the old WW2 airfield. If you land on 27 you touch down on the grass.