Hi Millie,
Yes, it does, for all the family - the census entry is in Lambeth, which, according to Phillimore's, was Surrey then, so anyone born across the river would have a "No" entry for this field anyway. The children were baptised in Middlesex, so this definitely fits, at least.
Jen - I have gone through William's and Jane's addresses on their 1856 marriage entry and cross-referenced these with the missing bits of the census. I don't think they lived then in any of the parishes with missing info, but they could have moved; plus, it's not inconceivable, I suppose, that other bits of the census for other areas are slightly missing, I suppose. I even checked the streets they had lived on in 1856 using the FindMyPast search (which allows street-by-street searching) and there's nobody with names that might be mistranscribed from Hawking to something else.