Abstract
The effectiveness of the implementation process in EC regional programmes has been subject to more attention in recent years. In the meantime, some inhibiting factors that influence the level of success and failure of the implementation of regional programmes have been revealed, while others are still being researched. The obstacles in implementing the Integrated Mediterranean Programme of Eastern Central Greece (IMP‐ECG) were found to include a widespread lack of know‐how in the integrated planning techniques which had to be applied, the dominance of a traditional centrist administrative apparatus, the inadequate supervision and monitoring of the programmes and, lastly, the invincible power of clientelism with its adverse effects on the intended objectives of the programme. Unquestionably the experience of the IMP‐ECG can justifiably be used as a lesson to improve the quality of implementation of current and forthcoming EC regional programmes.