Niru Ratnam says: 'This was totally apt for last Wednesday, the first day the bill went back to the House of Lords. We're entering the crucial end period - the whole health service will be determined over the next few weeks.' Photograph: Bedwyr Williams
'If the whole process throws up a huge amount of public debate, and there's enough of a reaction to cause the government to have another think ... ' Photograph: Ryan Gander
'It's got this lovely, archaic feeling to it. A lot of Macuga's work is like that - it refers to the history of propaganda.'
Photograph: Goshka Macuga
'The way King works is very knowing, he plays with the language of graphic design in a very subtle way. From this one poster you can't quite tell what the point of the campaign is - it's this incredibly naïve remark from a former X Factor contestant.' Photograph: Scott King
'Dr Claire Gerada, the chair of the Royal College of General Practitioners and one of the main opponents of the bill, tweeted that this should be put on the side of every bus.'
Photograph: Ryan Gander
'This is a rather beautiful image but it's quite dark as well. It suggests that there are deep problems in paradise.' Photograph: John Hill
'It sums up what a lot of people are feeling. The debate is getting more and more surreal, and I think they want to cut through all the crap and rhetoric and just shake Andrew Lansley and say, 'what the fuck do you think you're doing?' Photograph: Alistair Frost
'The point that 49% of services in NHS hospitals could be given over to private patients is one of the key arguments that many campaigns have been trying to get across, and here it's put over really simply, as if it were a newspaper cartoon.' Photograph: Spartacus Chetwynd
A poster created for the 2009 general election campaign, which Ratnam and McCrory posted on their blog to inspire other artists. 'It doesn't really make sense - you have to try and work out what he's actually saying. Is it about the Labour party or giving birth?' Photograph: Richard Wentworth
