The top one is the white form of Red Campion, but cannot really see enough detail on the others to be positive.

the other looks like red campion I think.. the red is annual and the white i think is a rarer biennial-- they're very pretty, If you want to keep just a few remove the seed heads bfore they set

Thanks both, I'll google now. They all have similar leaves so probably same family:-)

Hello Bornagain, they are both campion, i have the red/pink in my garden, Silene dioca, and the white one Silene uniflora, julien.

Thanks Julien, I take it then that they're benign. I've had a few surprises from this new topsoil:-)

I'm not sure if the pink is perennial or not as they are a wild flower in my field I leave them as the're lovely and attractive to birds & insects-- theres a pink near the gate thats been there for years--- I'd remove some of the seed heads just in case....

Will do Pam, thanks:-)