Hi JONNIE
You're going to struggle somewhat with a budget of £200. That certainly rules out any active speakers (speakers that have their own amplifier built in) such as the Beolab 4 and Beolab 4000.
On the Passive side (speakers that use a seperate amp) you could go for a pair of CX50 or CX100 and use an amp - either a B&O MCL2P or another make of amp (I use a Quad 405-2 with my 2300). With the CX speakers you'll have to be prepared to re-foam the drivers. MCL2P amps normally go for around £200 on their own but sometimes go for less.
If the budget is strict I would go for a Quad 303 (£110) like this
CX100 in need of re-foaming (£50) like these
and then connecting lead and new foams (£50). like this and this
The great thing about doing this is that at a later date you can add a B&O Cona sub-woofer (about £120) which will greatly enhance the lower frequencies. like this, althought this one was very tatty and looks like it didn't sell for £50
Good luck!
Cheers
Nigel
EDIT - checking on ebay MCL2P price now seems to be £60 - £70..... Someone else posted the other day that prices seem to be falling and it definitely seems to be a buyers market....if I hadn't bid on this this, it would have sold for £107.......