I think I'm down to choosing between the Monitor Audio R720 and the BK Gemini mkII for the sub..
Both will fit if the rather small hole I have for the sub (Roughly 31cm wide, depth and height aren't really an issue)
http://www.monitoraudio.co.uk/produc...0/your-speaker http://www.bkelec.com/HiFi/Sub_Woofers/Gemini.htm
Both are around the £200 mark, well within budget
