There needs to be four times as many track inspectors.

We have been seeking talks with London Underground over the safety issues at the heart of the current dispute and we welcome the opportunity to meet the company at ACAS tomorrow.

A track inspector will have miles and miles of track to cover,

Our members have the legal right to refuse to undertake duties that would put themselves or the travelling public in danger. [We] will give complete support to any driver who refused to move a Northern line train on safety grounds.

Given the urgency of the situation and the fact that it can take up to a month to ballot, we will not be sitting on our hands,

I think it is scandalous what has been put around in the media this weekend about this being a one-off,