Not visibly, no. Although Lily's grown a tiny bit in series 13 now that she speaks in full sentences.

@ScouserTom03 i would say so as I highly doubt that Norman is still 7 and Sarah and James are like 5. They have phones in later episodes of the CGI series, and in my opinion at least, I would not trust a 5, 6 or 7 year old with a phone.