So this is a long time coming (this post)!
HK has a crazy selection of Windows & Android tablets, you just need to know where to look.
The Golden Computer Arcade is well worth a visit if you are going to HK, if not for a tablet just general PC goodies and the experience - it's surreal how many stalls are in one space... and just how big that space is!
I walked away with a Pipo W2f tablet with a fully licensed copy of W8.1, bluetooth keyboard and case, all for $1100 HKD, that translates to ?90 GBP.
I have no complaints, and am thrilled with the build quality of the tablet. It works brilliantly and as it is full fat windows, Steam and DOTA2 all work as well (ideal for when I am travelling abroad!).
Here is a pic of the Golden Computer Arcade;
View attachment 91322
And the stalls inside;
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More photos from HK and Macau can be found here, for those that are interested;
https://flic.kr/s/aHsk5xU6Vr