Ann. On the desktop site, if you hover your cursor over Offers it gives you a drop-down menu to Offers and Competitions. (I can't screenshot it as I have to use my cursor to 'pick out' the area I want to take a shot of (MacBook Pro) and as soon as I move the cursor to 'pick out' the area then, of course, the drop-down menu disappears!)
On the right hand side is the heading 'Latest' one of the links is to Winners' Corner, but it opens on the 2016 thread.
On the left hand side is the purple box - again it has a link to Winners' Corner, which, again, opens on the 2016 thread.
I actually can't remember where I found this 2017 thread now! Someone else, on one of these threads, has also remarked that she found the 2017 thread difficult to find.