Phyllis reached the south of the new Bond Street western ticket hall at Davies Street having completed 3.2km of new tunnels. The TBM is one of eight tunnelling machines constructing a marathon-equivalent of tunnels between Royal Oak in west London and Woolwich in southeast London.

Tunnelling machine Ada will reach the new Bond Street station later in the spring, Crossrail stated. Both machines will reach Farringdon at the end of the year where they will finish their journey. Collectively Phyllis and Ada have constructed over 5.5km of new rail tunnels. Together with three other tunnelling machines in the east nearly 7km of the 42km of new tunnels have been constructed so far on the Crossrail route.