slip

I am a Rent Officer and I was doing my visits with work. I slipped on on a wet floor which had been mopped.  There was no sign placed to say the floor was wet.  The place I slipped is a block of flats which the company owns.  I called office and advised the manager of no signs and at it being hazardous. 

I have sprained my knee and ankle, I carried on my work but by the end of the day I was in more pain.  My concerns are that staff members stated that I would not be able to claim as I had not worn correct shoes. 

please advise of what my rights are.

Thank you