(14 Feb 2017, 8:32 pm)thetravelman wrote The 71 is often allocated a New E400 MMC even during the week, I've noticed this since the new double deckers were launched.
The E200 MMC has since tookover on the 71 as the allocated spare of choice. The E400 MMC spares float around through the week appearing on almost anything from the 71/87 to the 10/11 X47 and X87/88. On Sundays however services 11 & X87/X88 are allocated E400MMC deckers.
Hope this helps