SHARPLY higher profits are now being earned on Irish activities at the More O'Ferrall outdoor advertising group following prolonged investment in upgrading its 3,000 Adshel bus shelter panels in the Republic of Ireland and in Northern Ireland. Operating profits earned in Ireland increased 28 per cent in the first six months on turnover up 27 per cent. Most of the growth was achieved on sales of the Adshel medium at better rates. Expansion moves have included the £300,000 purchase of Adcom, a small business with 100 billboards in Northern Ireland, and the £1 million purchase of Nitelites, a young company which has developed innovative back lit outdoor advertising products in the Irish market. The strong growth in Irish profits contributed to a 33 per cent increase in first half profits to £6.2 million sterling at the More O'Ferrall group. Turnover rose 21 per cent to £48 million.