Yes they are Peter, although they're relatively small events attracting up to 200 people depending on the weather
They've been running for 30 years and give me an excuse to get the bike out.
However, I prefer the bikenight held nearby on the second & fourth Wednesdays, April - September at
Plough Inn
Town Street
South Leverton
East Retford
DN22 0BT
Good selection of older classic bikes and British stuff get there, along with a good burger van and crowd.