I buy the Heinz porridge from Tesco every week... they should have it.
Let me see if I can get a picture of it for you so you know what you are looking for.
I have excema, hayfever and asthma... and I have never been told to keep wheat or weetabix away from Will. In fact my health visitor suggested it to me.. so I am sure Scott would be fine! William actually eats 1 and a half weetabix mixed with about 7 oz of milk each morning... but he is a big lad (not fat just big) so its an appropriate amount.
H xx