 At a regional level, Network SouthEast undertook numerous electrification projects, including the Midland Main Line to Bedford and the Southern 750 V DC system reached Hastings and Weymouth.Electrification in East Anglia included the line from London Liverpool Street to Norwich and also to King's Lynn.Thameslink, a service that connected the northern and southern halves of London's suburban network, was introduced via the re-opened Snow Hill tunnel in 1988.