Best deal I could find for this bundle on the high street and seems to compare well to online prices at the moment. It's only available in-store as far as I know but it's pretty straightforward with the Wii console (plus Wii Sports), Wii Fit and a month of free Wii Rentals (providing you're a member of course) for £219.99. Considering everywhere else seems to be charging about £235 for the same bundle without the free rentals it's not bad at all.
If you're after an extra controller they're also doing a pack of Wiimote and Nunchuck for £30 if you buy at the same time as the console.
One word of warning, there are rumours that a price drop is only a couple of weeks away on the Wii console. No idea if it'll happen of course but the rumour is the US is possibly looking at a reduction of $50 which would probably be about £30 over here. Of course trying to predict that sort of thing where Nintendo is concerned is probably futile but wanted you to be aware of the possibility.