The great British summer need not prevent you from taking photos of wildflowers. Take a walk into your nearest patch of open ground, park, common, meadow and look at what is under your very feet.
Wait for the rain breaks, break in the gusts or even ignore the dampness and frame, compose, click! Do not be afraid to get down and dirty, get that low viewpoint and lie on the ground, use a picnic rug, coat or bin bag, the new angle will see your pics shine. Whereas the sun does not need to!
Being out and shooting is better than rueing the weather that is supposedly preventing you from doing so. So few do, means you will likely grab images nobody else has. Cloudy skies give better saturation of colours, perfect for wildflowers, if your lucky you may well find yourself looking at some of the UK's beautiful wild orchids.
Many Fauna is about too, mostly sheltering from the inclement weather, as we ourselves feel we should be however some can still be found if careful attention is paid - I personally draw the line at slugs!!!
And while you're out there don't forget to look up, rainy days, especially in the hills tend to give very mixed skies!