I am grateful for all the support I have received whilst researching and writing up this dissertation. Thanks especially go to Neil Sands, who has read through my draft copies, listened to my moaning and complaining and supported me every step of the way. I'd also like to thank my mum and dad who have endured me through this period, and forked out the money for my extension. Thanks also to Tim John who has been patient with me when no work was forthcoming.

Thanks.

Ruth

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