It's the common name for Saxifraga, have a look at this link ........
http://www.shootgardening.co.uk/plant/saxifraga-x-urbium

(copy and paste it into your browser)

thank u for your info Louise. have been wanting this plant since first knowing about it as a young girl,a well loved aunt had it in her garden. I always thought the flowers where red,but definatly remember the name London Pride.

the heuchera sanguinea 'coral bells' was also confused with saxifrage London pride. My parents used the names interchangebly.

I have the Heuchera from the 1930's, I have a picture in my plant profile if you want to have a look and see if it is what you remember.