I think its a........
Hottentot Fig (Carpobrotus acinaciformis). Mat-like succulent, when it flowers they are like a pink daisy.
They like a well drained sandy soil :o)
Flowers Spring to Autumn.
Sorry I don't know why it hasn't flowered though, lets hope someone can answer that bit :o))

This plant is often seen in sea-side towns growing vigorously over walls and in dry earth. Possibly your soil is too rich for it to flower. I am sure some one told me that it likes hot dry conditions. I was once given a large cutting but it failed in my London garden.

Thank you Ladyessex1 and Nannijii, both of your answers have been very helpfull. :-)

Your Welcome :o))