Identification: Plant identification

Can anyone identify this plant for me. It has very small succulent leaves and an proportionately large flower. Thanks.

 

Portulaca grandiflora, so-called "moss rose".

 

Thanks abgardeneer for your prompt reply, appreciated.

 

Portulaca is great stuff. I like to grow multi-colors of it together in a large pot, in full (REALLY full) sun.

 

Will take your advice 'togata57', when the sun returns here in the UK. We are just losing it the moment and are seasons are now changed to what we used to get. Hope the plant breeders can work on ornamental rice type plants as our climate is very 'wet' of the last few years.