188
Which would be double march - roughly. Must be a reason why 188 specifically - still looking.
>Double March: This is essentially a moderate jog at approximately 180 36 inch paces per minute
https://en.wikipedia.org/wiki/Military_step
Just spitballing here..
180 = Double March
4 = (March) Hare
4 = (March) Ides
A warning/promise (Ides of March = notable for the Romans as a deadline for settling debts) to whoever the March Hare is.
Got to be evening, roughly westerly direction also doubt that there would be that many people on the streets as the sun is rising, even in London. Assuming 2014, sunrise ~6 am, sunset ~6 pm.
https://www.timeanddate.com/sun/uk/london?month=3&year=2014