bnq it kitchen - high gloss length of backing

Just wondering if someone can help me to save me a trip to bnq.

We have built a breakfast bar in our kitchen which is 1.5m in length x 0.6m, it is made up of a 0.6 set of drawers and a 0.925 corner unit.

Ideally I would like to buy a 1.5m length which is basically my first question, do they sell this as I have only ever seen it available in cupboard size, if this is the case I will have to buy possibly 2 x 600mm and 1 x 300mm pieces, which brings me to my second question.

How do you attach the boards to the units without screing in from the front and seeing the screwheads, im lost.

Also if I do it like this Im going to have to insert a piece of timber in the 925mm unit so that I can fix the 600mm and 300mm piece together as this is not catered for already.

Hope this sounds correct, thanks very much chaps, kind regards Paul...

You could buy a high gloss laminate and have it cut to exact size and then glue on.

does that mean we wont get the same stuff as we have in kitchen though?
We have bought high gloss cream throughout thanks Paul

You should be able to get a matching laminate.Or you could fit dummy doors to give the impression of cup's and keep it symetrical.