Top investor Railpen walks away from UK's IP Group

July 27 (Reuters) - Railpen, the largest shareholder in Britain's IP Group, said on Monday that it does not intend to make another offer for the early-stage science investor as the companies could not agree on a mutually acceptable proposal.

Here are some details:

• London-based Railpen had tabled two proposals for IP Group in the last two months, which were both rejected on valuation grounds.

• The latest bid had valued IP Group at up to £730 million ($974.84 million).

• "The Board appreciates the engagement and effort from Railpen and its partners and is disappointed that a mutually acceptable outcome could not be reached," IP Group said in a statement.

• Railpen, which manages more than £34 billion in assets for railway pension schemes, holds an 18.4% stake in IP Group.

($1 = 0.7488 pounds)

(Reporting by Yamini Kalia in Bengaluru; Editing by Sonia Cheema)