Micro SIM manufacturer claims that the two networks have purchased hundreds of their cards, which serve the device's 3G functionality.

It is highly likely O2 will offer the device as it has a long-standing relationship with and was the exclusive carrier for the until September last year, when Orange .

However, when Jobs unveiled the iPad this week, he said devices shipped outside the US will be unlocked, and therefore available on any network.

The iPad is a slate PC that looks like a big iPhone. It has a home button and an aluminium bezel like an Apple MacBook.The 9.7in, 4:3 touchscreen is made of glass.