swiss cement firm in buying spree swiss cement firm holcim has bid $800m (£429m) to buy two indian cement firms and a holding company in the country.  it plans to buy associated cement companies (acc)  ambuja cement eastern and the holding firm  ambuja cement india ltd  a holcim statement said. shares in acc fell 5.5% as investors  who thought the offer was underpriced  decided to sell. meanwhile  uk-based firm aggregate industries said it had agreed a £1.8bn takeover by holcim.  the deal with aggregates will give holcim  the world s second-biggest cement maker  an entry into the uk market and boost its presence in the us. peter tom  who will remain as aggregate chief executive  said the 138p a share offer provided  significant value  for shareholders. the markfield  leicestershire-based company runs 142 quarries in the uk and the us. it also has 164 ready-mixed concrete plants  90 asphalt plants and 32 pre-cast concrete factories.  if the indian deals go ahead  it will give holcim a major presence in the world s fastest-growing market behind china. acc is india s second-largest cement maker with an annual capacity of 18.2 million tonnes and a market share of 13%.  holcim is looking to buy it (acc) very cheap   said kk mittal  a fund manager with escorts mutual fund in new delhi.  the market is not impressed. if they want a substantial chunk  then they should be paying a premium over the market price.  shares in holcim rose by 2.3% on thursday following news of the takeover.