61 is definitely 1st due, 51 should be right behind them but 41 and 47 have such a long haul. Looking at a map is one story but I live in this area and work in one of the companies listed above and can tell you hands down 41 and 47 would get smoked every single time to that box by 61 and 51...
Assignment SHOULD be (looks like 47 was on another box)
Sq61, E64, E90, E45
L47, TL41, TL58 FAST
All those boxes in that area are borders for 61,64,90 and 47,41