INTRODUCTION
This comes from the Circle line’s official twitter feed (it will also be on the Hammersmith and City and Metropolitan line’s feeds as they serve this station as well).
WORKS AT BARBICAN
Track renewal through Barbican platforms – removing old wooden track panels ready to replace with more durable concrete sleepers & new rail pic.twitter.com/3ajPHfBnzt
— Circle line (@circleline) October 22, 2016