At first there was some hope that it would prove possible to hold the Irish pound’s value at one pound sterling while still respecting the fluctuation limits in the EMS, despite the fact that Britain had not joined the new exchange-rate mechanism. But the strength of sterling in the early months of the EMS, buoyed up as it was by North Sea oil revenues and by the tight monetary policy of the Thatcher administration, put paid to that hope. It is arguable that a continuation of the sterling link into the early 1980s would have proved politically unsupportable, considering the loss of competitiveness that it might have entailed at a time of rapidly growing unemployment associated with the fiscal adjustment of those years".