London Sovereign can trace its roots back to independent Borehamwood Travel Services which ran a fleet that included ex-Kelvin Central MCW Metrobuses and Northern Counties Palatines bodied Leyland Olympians and a collection of other vehicles.

In 1993 it won its biggest London Buses contract, to operate route 13 with leased AEC Routemasters in its orange livery.

[6] Edgware garage was first opened by the London General Omnibus Company in 1925 with space for 24 buses, but there was plenty of room adjacent to the Underground station which had recently been built.

In 1984 a new 100 bus garage was built on the site of the long closed Edgware railway station at a cost of £4.5 million.

London Sovereign commenced operating route 125 in January 2022 with electric buses being introduced in October.

Route 142 passed to Metroline on 7 January 2023 with 226 commencing operations by London Sovereign at the same time with electric buses being introduced in May.

The garage has a plot of land next to it, owned by London Sovereign, which is now used to park most of the single deckers due to the 183 allocation, which started on 24 July 2015.