Isabel Hardman

Brendan Barber's last speech as General Secretary to the annual TUC Congress in Brighton made a salient point about what politicians can learn about the private sector from the G4S debacle. Ministers may well dismiss the majority of Barber's comments about cuts and labour market reform without poring through the transcript, but there was one attack that he made that will ring true for those on the right as well as the trade union officials sitting in the conference hall. Using the Olympics as his grand theme, Barber said: 'Private is always better than public, they argue. Not true, as we saw all too clearly when it came to Olympic security.' He added: 'Congress, it's right to celebrate the Olympics, but it's even more important to learn from them.

Boris Johnson has already denied that the work he is carrying out on airport capacity in London is a rival commission to the one set up by the Government and led by Sir Howard Davies. 'I was a bit flummoxed by that,' he told LBC this morning. 'What we're doing is we are going ahead with our contribution to the Howard Davies commission.' It doesn't actually matter whether the Mayor is holding an inquiry called the Johnson Inquiry Into Airports, with its own logo and press launch, or whether he's actually just calling experts together to develop a detailed submission to the Davies Commission as he suggests he is. The point is that in nine months' time, two years before the government's commission reports, Boris will announce his own solutions to the demand for greater aviation capacity.

The coalition's leaders like to stick to the line that the partnership is professional and business-like when they describe how policy is made. Newly-appointed business minister Michael Fallon struck a slightly different note this morning, though, when he appeared on the Today programme. He said: 'I think everybody has been frustrated: nobody likes being in coalition and everybody's impatient for growth.' He chose his words carefully when describing the 'different perspectives' that he and his new boss Vince Cable take on the labour market and deregulation: 'We're in different parties, we come from different perspectives and sometimes you'll see we use different language.

Nothing is certain at a Liberal Democrat conference other than plenty of discussion of benefits and taxes. The left-leaning wing of the party - the Social Liberal Forum - has released a series of potential amendments and emergency motions for the party's autumn conference. The list is an interesting indication of what the grassroots (the SLF likes to describe itself as the 'soul' of the Lib Dems) are most worried about. There's an amendment from the irrepressible Lord Oakeshott, which adds a line to a motion due for debate on the Tuesday of the conference, called 'Tackling Inequality at its Roots'. The peer's addition is, surprisingly, calling for a full mansion tax.