Further talks took place today under the auspices of ACAS in a last ditch effort to resolve the dispute over the 1,000 job cuts and the closure of all ticket offices.
Despite the best efforts of your negotiators, who have spent over seven days at Acas trying to resolve the matter, management has refused to budge.
They have refused to stop seeking volunteers during the consultation period which makes a mockery of the whole process.
As a result of the above, our campaign of industrial action continues with strike action commencing across the company tomorrow. I urge you to stand shoulder to shoulder with your colleagues during the strike to stop these unnecessary and politically motivated cuts to LU staff and services.
The confrontation came during the Mayor's monthly phone-in show on LBC 97.3 - thought to be only the second time the two men have spoken.
The dispute over ticket office closures was deadlocked tonight with millions of commuters almost certain to be caught in the crossfire.
London Underground says services will be affected from around 9:30pm on Tuesday 4 February.