"Dr. Sunil" wrote in message
m...
I saw units 7088/7055 at Mile End yesterday lunchtime as a 'special'
with a high powered light at the front, what looked like cameras at
either end, and quite a few Tube staff in donkey jackets, as well as
cables, in each of the carriages.

What was all this about? TIA

WAs it one of the normal silver d'stocks?