The 3G variant of the Nexus 7 is once again available for purchase via the UK Play store, following a recent restock by search titan Google. However, other new Nexus devices remain out of stock or subject to limited availability.

The new cellular model of the Asus-made 7in mini-tablet is now listed as being "delivered in 3-5 business days," while supplies of the Nexus 10 are also thought to be improving, with Google improving its shipping estimate from 2-3 weeks to 1-2 weeks. 

The 3G Nexus 7 sold out shortly after its launch, though not as rapidly as the Nexus 4 handset and Nexus 10 tablet. which saw supplies exhausted just an hour after their release.

The Nexus 4 remains the biggest mystery and is still listed as sold out with no indication of an expected re-stock and no pre-order option.

Responding to a recent enquiry from ITProPortal, Google moved to clarify its Nexus stock situation.

"Due to overwhelming demand, we are currently out of stock of Nexus 4 on Google Play in the UK. A number of devices are on back order and are expected to ship within three weeks. We have no further information to share regarding stock at this time," a representative of the firm said.

Speculation is beginning to mount that the Internet behemoth may, in fact, be scrambling to address some of the technical difficulties affecting the Nexus 4 and its Android 4.2 Jelly Bean OS before resuming active distribution of the product, which is one of our best smartphones for Christmas 2012.

For more on Google's award-winning 7in tablet, see our Nexus 7 review, though bear in mind that it refers to earlier, Wi-Fi-only iterations of the device. The Nexus 7 also earned a place on our best tablets for Christmas 2012 list.