Micro SIM manufacturer Gemalto claims that the two networks have purchased hundreds of its Micro Sim cards, which support the iPad with 3G functionality.
It is highly likely O2 will offer the device as it has a long-standing relationship with Apple and was the exclusive carrier for the iPhone until September last year, when Orange announced it would also stock the handset.
When Jobs unveiled the iPad this week, he said devices shipped outside the US will be unlocked, and therefore available on any network. However, the Micro Sim format is unused on any other device in the UK (that we are aware of) and if both Orange and O2 have recently purchased Micro Sims, it is unlikely that they will be aimed at any other device.
There is no news on the price, or 3G availability of the iPad in the UK, although Apple has said that the device will ship worldwide within 60 days, for the WiFi version, and 90 days for the 3G option. In the US Apple is charging a premium of $130 for a version that includes 3G. And US customers have the option of paying $15 for 250MB of data, or $30 for unlimited data (note that data connectivity is generally more expensive in the US than in the UK). There is no news regarding UK data charge.
As with the Apple iPad UK price, we will keep you informed of up-to-date pricing regarding data plans as information becomes available.