stoatie I love Ikea
it is one of the best places to go showroom wise imo. If you are able to get a discount with homebase then I would get them to do a quote for you. Reading online, their installation charges will be high!
personally, if you are working on a tight budget I would get as many free quotes as possible and then haggle with them until you get what you want for the price you want to pay.
nomore bathroom and a kitchen is a lot to be contending with! Does anywhere do buy one get one free?! I know it seems a spacious kitchen but it is half the house downstairs so we have to have a dining area and the majority of the kitchen cupboards are full of kids craft items 
I think having no wall cabinets will open the space up but it is weighing up the practicalities of losing storage space. Would some nice shelving be a workable compromise?
in terms of colour schemes I have fallen in love with black gloss cabinets and lighter worktops. Dh says no on the basis of the howdens chap saying any scratches etc will show more on the black than white due to the scratches being white.
worktop wise I have gone off the black sparkly gloss due to online reviews suggesting it will be high maintenance to keep clean and sparkly and it will scratch.
so we are set on white gloss doors from somewhere and a black matt worktop ( I think!) flooring, paintwork and splashbacks - no idea.
if anyone has any suggestions on good priced worktops please shout. The longer this process continues the smaller the budget gets in dh's mind 