LISBON, Feb 2 (Reuters) - Following are some of the main stories in Portuguese newspapers on Thursday. Reuters has not verified these stories and does not vouch for their accuracy.

* Banks lose first round of legal battle against extraordinary levy (Jornal de Negocios)

* Bankruptcy managers to gain access to all debtors' data (Diario Aprende mas de nosotros Noticias)

* Left Bloc pressing ruling Socialists to admit precarious workers to civil service (Diario de Noticias)

* Faster naturalisation process for immigrants (Publico)