Deliveries of the Raspberry Pi have ground to a temporary halt after the computer’s two distributors refused to ship it without the CE conformance (Conformité Européenne) mark that is stamped on most technological goods.

The problem became apparent earlier this week after the ordering systems on RS Components and element14/Premier Farnell changed delivery dates to as far out as August.

The Pi’s developers confirmed that the first batch of 2,000 boards were in the country but would only be sent to customers once the CE mark bureaucracy had been satisfied.

Raspberry Pi’s developers said they believed that as an uncased board, the CE mark should not be necessary but the suppliers appear to be covering themselves for every bureaucratic eventuality.

 “On the basis of preliminary measurements, we expect emissions from the uncased product to meet category A requirements comfortably without modification, and possibly to meet the more stringent category B requirements which we had originally expected would require a metalised case,” said a message on the Raspberry Pi website.

Exactly what the Raspberry Pi will have to do to get the CE mark is unclear, which probably explains why the team have had to enlist the help of the Department for Business, Innovation and Skills (BIS) to help them navigate the requirements.

The boards should be shipped to customers in a matter of days or weeks but the timescale remains hard to predict.

“Apologies again for any confusion this action has caused. We firmly believe delivery will be much sooner than August,” read an email from element14.

On a more positive theme, the Fuse Sinclair ZX Spectrum emulator has been ported to run on the Raspberry Pi ahead of the 30th anniversary of the BBC Micro this weekend.