What type of flour is "wheat flour" in the UK?
What you are looking for is called wholemeal flour. 

Here's a quick US to UK baking translation guide. US on the left, UK on the right:


All-purpose flour = plain flour 
bread flour  =  strong flour (both have extra gluten) 
whole wheat flour = wholemeal flour 
1 stick of butter is 113g (get a scale, trust me) 
1 large egg = 1 medium egg