Steelworkers' pensions must be protected in any plan to save Tata Steel's UK operation, Labour has said.
ITV News understands ministers are exploring ways of reducing the firm's UK pension burden in a bid to attract buyers.
Reacting to the reports, Owen Smith, Labour's shadow work and pensions secretary, said:
Workers at 19 French nuclear plants have voted to go on strike on Thursday as part of protests over labour reform that has caused fuel shortages across the country.
The strikes are unlikely to provoke blackouts due to legal limits on industrial action in the nuclear industry and France's ability to import power from neighbouring countries, industry experts told Reuters.
Approximately 43% of petrol stations are partially or completely without fuel after CGT blockades at oil depots around the country.
French ministers said that strategic fuel reserves are large enough to last more than three months.
On Wednesday, President Francois Hollande's government mobilised strategic oil stocks for the first time in six years.
More than 4,300 petrol stations across France, approximately 42% of the total, are partially or completely without fuel due to the blockades which began on Monday.