I agree with David (I also have the 8gb Nook HD 7) and it's excellent - at around £50 new it was less than half the price of the Hudl.
You can still get the 16gb version at Argos, Isme, Very etc for under £100 and often 10% / £10 /£20 off the latter 2 places with code. Or £74.99 for a refurbished Nook HD 7 with a 12 Month Argos Warranty on Argos ebay outlet.
Very/Isme also have the Nook HD+ 9 inch tablet for £129 so with the 10% off code on their site (439CT) you can get a 9 inch tablet for around the same price as the 7 inch Hudl. The Nook HD 7 has an almost identical screen resolution to the Hudl but the Nook HD+ 9 has an even better screen, which would be my priority if you wanted it for viewing photos. No camera on a Nook but I never use a tablet or phone camera anyway...
(Nook HD 7: 1,440 x 900 pixels, 243 pixels per inch. (iPad mini: 1024 X 768, 163ppi; Nexus 7: 1,920 x 1,200, 216ppi and the Kindle Fire HD 1,280 x 800, 216ppi, Hudl: 1,400 x 900, 242 ppi). Nook HD+ 9: 1,080p display of 1,920 x 1,280 pixels, 256 pixels per inch.)