This is hot off the press.

As of today, Sony Centres have a new offer. You may have to get the staff to check their system, as I doubt they will even know about it yet.

Basically, instead of buying the Xperia Z1 and getting the Sony Smartwatch 2 for half price if you preorder, you can decide to receive instead of the smartwatch 2, £75 off any of the lenses, QX10 or QX100.