Feb 11 (Reuters) - British plastic-packaging supplier RPC Group (RPC.L) said third-quarter adjusted pretax profit rose, aided by cost controls, and that it planned to cut jobs at its Marolles plant in France due to continued weak demand in the cosmetics sector.

Photo: www.rpc-group.com

However, the company, which produces packaging for beauty and personal care and pharmaceuticals sectors, said revenue was down as polymer price reductions were passed through to customers.

"Trading conditions continue to be affected by the uncertain economic environment with underlying activity levels in the third quarter similar to the first half year," Chief Executive Ron Marsh said in a statement.

The company said it kicked off the second phase of its RPC 2010 cost-reduction programme.

RPC shares closed at 252 pence on Wednesday 10 February on the London Stock Exchange. (Reporting by Tresa Sherin Morera in Bangalore; Editing by Vinu Pilakkott)