I studied at the LCP London in the '70 doing postgraduate studies in graphic design. Since then I was working and teaching and now head of graphic des. department in Des. College. As there were no academic degrees at that time I got MA Equivalent from LCP which is now LCC.
Do you know where can I continue to Phd ?

Your old college, LCC? Or one of its affiliated colleges, or anywhere that does your subject. Have you checked findaphd.com?

At the LCC there is no Phd studies
I didnt talk to them but I will, may be they can recommend on a place.
Do you have any suggestion?

Yes, there is, it's just not very obvious - look in research - research degrees http://www.lcc.arts.ac.uk/9299.htm

For any colleges you find that do graphics at Masters level, or whatever your chosen discipline is for a PhD project, I'd advise looking at the research profiles for staff and enrolled research students for that university and subject area. This should give you an idea of whether your proposal might fit with their current or potential research interests, as well as what types of projects are currently being undertaken there. You might find a few members of staff whose areas of expertise overlap with your interests, or include someone you'd like to be supervised by, then you could approach them informally with your PhD proposal. Most universities should have information on application procedures and relevant contact details for potential PhD applicants. Best of luck!