Where was the first place harry met malfoy?

When Harry was about to start his first year and he didn't know how to get to platform 9 3/4. Harry overheard Ron's mum saying muggle, a wizarding world Word and followed her. upon hearing her dictate to her children how to get onto platform 9 3/4, he asked her how to get there. Ron sat with Harry on he train and they were friends ever since.