Self and family went to Shoreham for the first time last year, and came away thinking what a great venue and show it was. Not as big (or crowded) as the Late Biggin Hill Show, but similar in terms of content, with a good range of warbirds, civil types plus gliders and one or two novelty acts. Plus classic vehicles and the usual family rides away from the crowdline. We took the train down from East Croydon, and a courtesy bus got us as close to the entrance as possible (access over a footbridge over the river). So no traffic queues - but even if we had used the car I don't think there were any problems as far as i could see. I miss Biggin which was just 20 mins away (or 1 and a half hours, depending on traffic..) but Shoreham is certainly worth a visit, and you even get some sea air mixed in with the avgas. I'm aiming to go back this year.