I live not far from Ipswich - to the West of the town, so c12-20 miles from the villages where the girls were found. Hintlesham isn't far tho - it's very chic and it's on my way to Ipswich. [Officially - in fact I spend most of my time in Lambourn or Newbury, and some in London]. Suffolk is a very strange place, very insular
I was amazed initially that a town like Ipswich could support "30 to 40" prostitutes - but it's very close to Felixstowe and Harwich which are major container ports so there's a constant transient population around, increasingly of foreigners inc Poles and Kosovans; it's also not far from Colchester which has a huge army barracks.
I think the Suffolk police have been a bit maligned by some on here. For one thing it's the most sparsely policed county in the country - ie in terms of ratio of police to population [info from local papers, council pamphlets etc]. They were obviously busy doing quite a bit of 'psychological profiling' which doesn't mean they weren't protecting the street girls - from what I hear you haven;t been able to move for plod, in the environs of Ipswich.
If Stevens is the killer, which looks likely, it would have been difficult to protect the girls from someone they obviously all trusted. Luckily his vanity seems to have betrayed him.