I'm starting to piece together the events calendar for 2010.  There are just a few for now, but I'll be updating this over time.

31 January 2010 - Abarthisti takes over Duxford, IWM Duxford, Cambridgeshire
The Imperial War Museum at Duxford is home to more than 200 military and civil aircraft, as well as maritime and land warfare exhibits housed in seven cavernous exhibition halls and hangars.  Our base for the day will be the American Air Museum, and we've been granted special access to park on the apron directly outside.
IWX Duxford website | More information (Abarthisti Members only)

3/5 April 2010 - Trofeo Abarth 500 GB, Oulton Park
The opening round of the 2010 Trofeo Abarth 500 GB at Oulton Park will be one of the most attended events of the season and by being on the calendar we will be part of the official start to the UK Motorsport season. Read more...

17/18 April 2010 - Trofeo Abarth 500 GB, Silverstone (GP circuit)
The second round of the 2010 Trofeo Abarth 500 GB at Silverstone will be on the opening rounds of the FIA Formula Two Championship. Read more...

1 May 2010 - Auto Italia Italian Car Day, Brooklands, Weybridge, Surrey
Held in the historic surroundings of the famous Brooklands circuit, the Auto Italia-sponsored Italian Car Day is a great opportunity to see some of the finest examples of Italian metal.  A selection of trade stands will be present, and the Brooklands Museum will also be open to visitors.
Auto Italia | Brooklands Museum

6 June 2010 - Auto Italia Stanford Hall, Lutterworth, Leicestershire
Italian car enthusiasts across the country look forward to the annual event at Stanford Hall.  Cars from every era will be proudly displayed within the Hall's picturesque setting, with many clubs in attendance.
Auto Italia | Stanford Hall

27 June 2010 - Bedfordshire Italian Car and Bike Day
Held at The Sharnbrook Hotel on the A6 between Bedford and Rushden, the Bedfordshire Italian Car and Bike Day attracts a wide selection of Italian metal to the family-run hotel and restaurant. Entry is free for all show cars/bikes, which are to arrive by 10:30am. Public admission is £3 per adult, and gates open at 11am.
The Sharnbrook Hotel

2, 3, 4 July 2010 - Goodwood Festival of Speed, Goodwood, West Sussex
The Festival of Speed is far more than just a hillclimb – it is a celebration of the history of motor sport and can justifiably claim to be the world’s biggest and most diverse classic motor sports event. Taking place outside Goodwood House, using the main road through the Park as the track, it’s the only occasion where you’ll see in action the greatest competition cars and star drivers from the entire history of motor sport.
Goodwood Festival of Speed

17/18 July 2010 - Trofeo Abarth 500 GB & EU, Brands Hatch (GP circuit)
In July the Championship will be featuring alongside the FIA World Touring Car and Formula Two Championships on the Brands Hatch GP circuit. The Trofeo Abarth 500 GB will join the Trofeo EU for a combined grid that will offer a great spectacle. Read more...

24/25 July 2010 - Trofeo Abarth 500 GB, Silverstone (GP circuit)
At Silverstone in July, the Trofeo GB will support the Silverstone Classic and HSCC (Historic Sports Car Club) events. Read more...

1 August - Goodwood Breakfast Club
The Goodwood Breakfast Club plays host to a series of meetings with the promise of an eclectic mix of vehicles and a great organic breakfast menu to get the appetite of any motoring enthusiast going.  Theme: Performance Car Legends - Post-1970s drivers' cars, including track day favourites.
Goodwood Breakfast Club

4/5 September - Trofeo Abarth 500 GB, Brands Hatch (Indy circuit)
In September, the Trofeo GB returns to Brands Hatch to make use of the Indy circuit. Supporting series to be announced. Read more...

17, 18, 19 September - Goodwood Revival, Goodwood, West Sussex
The Goodwood Revival is the world’s largest historic motor race meeting, which relives the glory days of historic Goodwood Motor Circuit.  But the Revival is far more than a series of races for historic cars – it is a magical step back in time, a chance to get away from the modern world and revel in the romance of motor racing as it used to be.
Goodwood Revival

3 October - Goodwood Breakfast Club
The Goodwood Breakfast Club plays host to a series of meetings with the promise of an eclectic mix of vehicles and a great organic breakfast menu to get the appetite of any motoring enthusiast going.  Theme: Souped-up Sunday - Tuned tearaways, including hot rods.
Goodwood Breakfast Club

TBC

Trofeo Abarth 500 GB, Snetterton
Date to be confirmed, this race will be supporting the British Superbike Championship at Snetterton. Read more...

Trofeo Abarth 500 GB, Spa
At a date to be announced, the Trofeo GB nips across the water to Spa. Read more...