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First thing I noticed on the design before I even got past the top black bar was that your logo has different padding compared to the phone/delivery sections on the top right, bring down the logo to the same level.
Your menu needs work, currently I see 2 buttons on your website and the word home slapped on the top left, look to do more with this.
Your call to action is well missing, you have some well designed adverts etc on the design, yet nothing to make people click on them.
Your main banner on the left under the menu, why does that have the large whitespace? Looks like it needs finished. This section should be the part that draws the eye the most but at the moment its the part you look at last.
Your footer, why all the large empty space? Why not make those 3 menu lists go horizontally rather than vertical, it might help you get rid of this uneven whitespace you have there.
Its a good start, but you have a good bit left to do to make this the finished article. Looking forward to seeing the next revision.

Hi Alan,
Thanks for your comments.
Main nav alignment - Good call.
Not sure how I can improvement the menu, as there's only two buttons I need really.
The home link in the top left is the breadcrumbs, I guess it doesn't really show that on the homepage.
Interesting idea re the footer. Do users expect a vertical footer? Would a horizontal footer be less easy to understand? I know that if I have one horizontal footer it would be easy, but as I've got three sections, could it get confusing?
Again, thanks for your comments,
Steve