Dunwich Dynamo 2016

https://www.abelliogreateranglia.co.uk/about-us/latest-news/news-articles/cyclists-encouraged-to-reserve-cycle-space-on-train-ahead-of-dunwich-dynamo-event
As last year, no bikes at all on the small trainlines on Sunday, only from Ipswich. However I think the bit in bold might be new?

Sunday 17 July - NO bikes will be allowed on trains between Lowestoft and Ipswich, and Lowestoft and Norwich. A special timetable will be in operation for Intercity services leaving Ipswich between 0900 and 1500, on which 50 bikes will be permitted to travel on trains to London. A special reservation will be required and be can obtained at http://www.abelliogreateranglia.co.uk/dunwich-dynamo-reservation. Booking closes at 2100 Saturday 9 July. All other routes will only allow the normal number of 4 bikes per train.