Chain stores, who were in their full flowering during the 1920's and 1930's, sought out a distinctive house style to emphasise their modernity. In recent years they have closed many branches.
Burtons 
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The large mens clothing chain of Burtons
were somewhat tempted by deco.
Founded
by Montague Burton in 1900, the chain spread widely on the basis
of vertical integration, a very large factory in Leeds feeding an endless
supply of modestly priced mens suits to their ever expanding chain of shops.
These adopted an evolving distinct house style and a taste for
terracotta. They were mostly, if not all, designed by in-house architects
which helped give a uniform look to their shops. Almost deco, but still finding deco
might be a little too exciting for
their clientele. It helps to mark out their buildings today, even though
they have mostly passed to other owners, as with this example above in Dublin. The most
interesting one in Ireland is one in Ann Street in Belfast, with elephant
capitals. This
is the former Cork branch below, still a clothes retailer today but now
catering for ladies.
F W Woolworth, once very common in every town of any size in Ireland, completely withdrew from the Irish Republic in the 1970's. They favoured a fairly plain modern style with distinctive dark red and gold fascias but did not go in for deco buildings here. They would have been a good source of small deco items.