Brighton to Seaford (England, UK) bike ride – Sustrans National Cycle Network Route 2

Bike ride from Brighton to Seaford trying to follow National Cycle Network Route 2 – https://www.sustrans.org.uk/find-a-route-on-the-national-cycle-network/route-2/ made a couple of mistakes as using signage rather than following a map. From sustrans link, Route 2 is ‘A stunning long-distance bike route along the south coast of England from Dover in the east to St. Austell in the west. Visit the Jurassic Coast, Brighton and Devon by bike and enjoy sea air, amazing views and a trip that you’ll never forget.’