Lenovo's ThinkPad X12 Detachable is a 12.3-inch 2-in-1 with separable tablet and keyboard sections. It's available in just one configuration in the UK, costing £1,459.14 (inc. VAT; £1,216.20 ex. VAT), although US buyers have more choice, starting at $1,099.80. Naturally there's competition in the 'tablet-first' detachable segment. Most recently I looked at the Dell Latitude 7320 Detachable and HP Elite Folio -- and of course, there's always the progenitor of this form factor, Microsoft's Surface Pro.