Insulating/ dry lining cold walls in bedroom

[balletpixie]

We need to know the best option for dealing with cold walls in a north facing bedroom which accumulates condensation and consequently mould also. Our house is 1930's solid wall construction so no cavity.
We have started to use a dehumidifyer which is helping with the moisture.
How can we insulate the walls? Can we dry line without losing too much space?
Suggestions very welcome :roll:

[stoneyboy]

balletpixie,
Unless you include a ventilated gap behind any dry lining your condensation problems will get worse. 25mm gap 50mm foam backed plasterboard - you're going to loose 75mm.
end

[TheDoctor4]

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