Hi Simeone1,
The contour tool works well for this. It's on the side tool bar in a fly out when you hold down the "Blend" tool icon. I apologize if I'm being too descriptive, but I don't know your level of expertise. The Blend tool icon looks like three orange boxes. When you hold this down you will see several more icons. One of these looks like nested boxes... that's the contour tool. If you select this and click on your object you can drag an outline from it (actually you can drag multiple outlines).
When you have "Contour" selected, several options appear on the top tool bar that allow you to change the properties (how many outlines, spacing, etc.). If you play with it a little I think you will find it easy to use.
When your done making the outline you can convert it to a curve (Arrange/ Convert to curves).
What part of England are you in? I'm originally from Hull.
Rob