Training this coming Tuesday will once again be at the Bowthorpe School site. Stick NR5 8BF into Google Maps. I'm not sure any other engine will do it and this includes sat navs.
Otherwise, turn out of town on the Bowthorpe Road at the Bowthorpe Road/Guardian Road traffic lights. Going North this means turn left. Going South this means turn right in the right turn filter.
Once on Bowthorpe Road turn right after c200m onto Ivy Road. Follow the road to the bottom where there is a car park.