The Sprint Section of the VMCC have issued a calendar for 2011 which includes events run by themselves and other bodies including the NSA, Straightliners, Thundersprint, Torque Motorsports, MarshalsNorthwest, Pageant of Power.
http://vmccsprint.co.uk/vintage_classic_modern_motorcycle_sprint_racing/Calendar.htmlNote that the dates were correct when the VMCCSprint website was uploaded, but it definitely worth checking event details before setting off etc etc. (there are links to the clubs that are organsing them to so it shouldn't be too difficult).
Due to the cost of running some of the VMCC Sprint's
own events, spectating at these is only open to VMCC Members unless shown otherwise (however The Brighton Speed Trials is, of course, open to the public).
Those wishing to compete can buy day membership (about £3), and if need be, buy a day's ACU competition license (about £10) to make things easy. Anyone want to have a go?

As of today, 19-04-2011, the VMCC Sprint website 'events' page is still to be updated, as is the 'entry details' links from the calendar.
NSA website
http://www.sprinting.org.uk/index.htmlhttp://www.straightliners.co.uk/http://www.torqueevents.com/National Hillclimb Association
http://nhca.co.uk/Pageant of Power
http://www.cpop.co.uk/the-track/bikes