Small amount of white/cream paint for quick touch-ups (Cowley OX4)

I’m looking for a small amount of white or cream paint to cover some chips on the doors and skirting boards in my rented house.
The doors are quite old, so any type of paint or shade (white, off-white, or cream) will do. I just want to do a very quick "spot fix" to make them look a bit neater without a full renovation. Thank you for reading!