The sink in the island is the way to go here. As Lampert Dias mentioned above, your island can be larger than drawn. I prefer the sink and the breakfast bar at the same height as pictured above, but some people like to step the bar side up to protect it from the sink. It is an option. You can put the pantry and refrigerator on either side of the wall or even split them up and flank the wall as long as the refrigerator door can open. I would take the opportunity for more storage or display and put a cabinet on the wall behind the breakfast bar. Consider using a shallower cabinet there like 17" deep. It could be like a "china" cabinet display piece or more pantry storage if needed.

Nice space. You could do a true U-shape pulling the right side off the wall so the door opens to the seating side of a great peninsula.

We are considering getting a glass back splash for our new kitchen but are unsure regarding hard wearing or do they crack over time esp with the heat from the cooker. Also any recommendations of good suppliers in the Dublin area. Thanks

Cohesive, classic, colourful and welcoming. Very successful project. Hope you enjoy the space and your interiors new look!