First operates out of five main depots; each division provides services to the area around its depot:
Network Norwich in March 2018 First Eastern Counties operates services branded as the
Network Norwich within the city centre of
Norwich and to towns and villages within approximately a radius. This network was launched on 23 September 2012, with buses painted in colour-coded route branding on the fronts to reflect the line in the network they were allocated to. On 22 March 2017, First announced that they were to introduce a direct bus service numbered X41, running between Norwich and
Bungay in Suffolk via
Ditchingham, as part of the Charcoal colour line. This line was launched in April 2016 with service 40 from Norwich to
Poringland. The Network Norwich operation was one of five FirstGroup operations to begin taking delivery of
battery electric buses in 2023, funded through the Zero Emission Bus Regional Areas (ZEBRA) grant from the UK government. The first seven buses from an order for 59
Wright StreetDeck Electroliner double-decker buses began entering service in October 2023, while eleven
Wright GB Kite Electroliner single-deck buses are also on order for delivery to Norwich during 2024. When completed, this order is set to replace pre-existing diesel buses at First's Roundtree Way depot.
First Great Yarmouth First Great Yarmouth operates services within the towns of Great Yarmouth and
Gorleston-on-Sea, as well as dedicated routes to Norwich and Lowestoft under the
Coastlink brand. The Great Yarmouth services operate out of the old Great Yarmouth Transport depot on Caister Road, which is a
listed building dating back to the mid-1900s, retaining its original frontage.
First Lowestoft First Lowestoft operates services within the town of Lowestoft, as well as dedicated routes to Great Yarmouth,
Beccles and Norwich. The Lowestoft services operate out of Britain's most easterly bus depot, situated on Gordon Road, just a few hundred metres away from
Ness Point.
First Ipswich First Ipswich operates within and around the town of Ipswich to a radius of about . The Ipswich services operate out of one depot situated on Star Lane, just a few minutes walk from the town's bus station in the Old Cattle Market. A
guided bus system named
Superoute 66 was established in February 1995, running between Ipswich town centre and the suburbs of
Kesgrave and
Martlesham Heath, in partnership between Eastern Counties and
Suffolk County Council, commencing operations with a fleet of six
Plaxton Pointer bodied
Dennis Darts. This service was the first commercially-run guided bus system to be operated in the United Kingdom, and was eventually upgraded to use double-decker buses under FirstBus. Having previously operated Ipswich's
park and ride service from 2008 until November 2013, First Ipswich resumed operating the service in July 2017. In 2019, First rebranded their Ipswich operation to
Ipswich Reds and introduced a new red livery for the town's services. ==Services==