This is a no brainer buy if you need a second remote. Right now, the Wiimote alone is £30, and this Wiimote+Wii Play is £28. You're paying £2 less for the Wii Play game added on top.
I myself bought this at RRP £35, and was still happy with the purchase. Some of the games aren't as short as others, and you can still go back to play them even months after buying it. Some other games, like the fishing and rotating bubbles one, are a lot less fun.
Since a certain (i'll leave nameless) Wiimote charger left both of my Wiimotes burnt out recently, I'll definitely give this a buy. Even if you want another two Wiimotes on top of your first, buy this package twice and give away the second Wii Play for christmas.
Great deal. 5/5 for the price being below RRP of a stand alone Wiimote.