Congrats and welcome to SCD, a brilliant school and am sure you will be delighted with your choice. My son used to travel by coach from carpenders park in his first year but the whole of this year (including winter term) he has only travelled by public transport. He also stays for after school club and so far has had no problems.
Public transport is quicker than the coach. From our house it only takes him approx. 45 minutes.
Thank you so much for your reply. I think I will follow your suit and let ds go by coach in year 7 and then when he goes in higher class then travel by tube.