By next year passengers can expect trains to be less packed. A new flyover at Hitchin will carry trains from London to Cambridge over the main line, relieving a key bottleneck.
New platforms planned for Peterborough should increase capacity and reduce congestion there.
From 2014 new trains through the Intercity Express Programme will provide more seats, and £240m will be invested in key pinch points on the East Coast main line including Peterborough.
The East Coast main line that runs through Stevenage and Peterborough will be one of the first in the country to get new trains after the government confirmed a £4.5bn deal has been agreed to build new rolling stock.