I got quite a cheap one from homebase tj - bigger than the first day cover but with a grey surround and silver frame it really makes it stand out. It's an awkward size for a frame so decided the answer was to go bigger.
Oh that's great to know Ruthie, thanks. I have a Homebase just down the road, within 'walking' distance for me, so I'll try to have a proper look in the next few days. I had a brief look the other day, but had someone with me. I'll have a wander down on my own. Thanks so much for letting me know.