Maybe you mean Photinia - is it the normal one (P. Red Robin) or the smaller variety, Photinia Little Red Robin? In a pot or in the ground?

It is a Red Robin. It is in a tub.

If its not Little Red Robin, it will eventually get too big - also more vulnerable to frost damage in a pot, so keep it somewhere more sheltered over winter. Otherwise, keep it pruned to reduce its growth and keep it bushy, feed in Spring with a compound fertiliser (Growmore or whatever) and again 6 weeks later if you like.