28 month old not speaking

Does he talk to his mum & dad?

Does he point to things that he wants?

It would cause me concern but I would want to look at the bigger picture, as some children are quiet in some situations.

It depends. Does he make any sounds yet? He must be babbling? If not then yes defo a cause for concern. If it's full words or sentences you're missing i wouldn't be worried yet, he's still quite young.

In registered care you would be tracking his development including speech and communication you could then do a referral and also get your inclusion officer to support you as it is I would get mum to talk to her Hv He should have either already had or be due a 2 year check but if its not been picked up you she could still call them. Childrens centres often have small talk sessions where you can get advice and possibly a referral.
Does he make normal babble noises and any recognisable sounds or indicate his needs in non verbal ways?
Does he need to speak or are adults always giving him what he wants anyway?

I would get in touch with his health visitor and ask for a referral to speech and language.

How good is his communication in general? Do you understand what he wants? Is he able to follow directions 'e.g. Go and get your coat' and does he respond to his name or other sounds, such as a knock at the door he will look towards the door with expectation?
I am a childminder and if he were in my care and had not said a single world I would be referring him to a speech and language professional to make sure there was no medical cause for his lack of talking. I would also get him a hearing test to ensure he can actually hear the words you talk.
If all that came back normal, I would possibly look at speech and language therapy however if his communication and understanding is good and he can do the things I mentioned above, I wouldn't be too worried just yet.
I think it is very important that he gets refferred because if there is a medical cause or his hearing is the problem then not being able to speak/understand could be hampering different areas of his learning.

DS2 wasn't speaking at that age, it turns out he has glue ear (grommets pending) and ASD. He's now 3 1/2 and making slow but significant progress. It's worth a referral to audiology and speech and language, for reassurance and support if nothing else.

If you have noticed so have his parents. Leave it alone.

Does he point?