Irish construction firm Sicon — the holding company for the Sisk group’s construction assets — has said its 2012 accounts will show a return to profitability, after it incurred a pre-tax loss of €153.6m in 2011.

Boris Johnson has officially opened the Shard’s observation deck to the public.

With the Shard in London — Western Europe’s tallest building — opening tomorrow, John Daly visits Ireland’s equivalent — in Cork City