From a press release:

BRITISH SIDECAR CHAMPIONSHIP FINALE AT CASTLE COMBE

The new Eastern Airways British Sidecar Championship will conclude with the final round at the picturesque Castle Combe circuit in Wiltshire on September 26.

As part of the two-day “Superbike Grand National” at Castle Combe, the new-look Sidecar series will join leading British Superbike Championship
race teams for an end of season motorcycle extravaganza.

“This will be the first two-day motorcycle race event in the circuit’s 54-year history, it will be a very special occasion,” said circuit Chairman
Howard Strawford.

The inaugural Eastern Airways British Sidecar Championship ­ complete with attractive new manufacturer-linked liveries ­ is expected to be a crowd-puller at the 1.85-mile circuit.

Strawford continued: “We’re very excited about the prospect of hosting the final round of the British Sidecar Championship, a double-header race format which could well decide the 2004 champion. This is, we believe, the first
British Championship round here since the early 1970s when Barry Sheene and current BSB favourite Michael Rutter’s father Tony were chasing 350cc
honours.”

Leading driver and nine times World Sidecar Champion Steve Webster commented: “I’ve never raced at Castle Combe but heard lots of good reports about the circuit, the people and the huge crowds they attract so I’m really
looking forward to it.”

The Eastern Airways British Sidecar Championship will be managed by Sportscom Media Limited. Final championship details are subject to contract with British Superbike Championship organisers, MCRCB Events.

2004 Eastern Airways British Sidecar Championship calendar

March 28 – Silverstone, Northants
April 12 – Brands Hatch, Kent (Indy circuit)
April 25 – Snetterton, Norfolk
May 3 – Oulton Park, Cheshire
May 23 – Mondello Park, Ireland
June 6 – Thruxton, Hants
June 20 – Brands Hatch, Kent (GP circuit)
July 4 – Knockhill, Fife
July 18 – Rockingham, Northants
August 15 – T.b.a
August 30 – Cadwell Park, Lincs
September 12 – Oulton Park, Cheshire
September 19 – Donington Park, Derbys
September 26 ­ Castle Combe, Wilts.