Sorry to hear that. Do you not have the option of a speed awareness course in your area? You're in the qualifying 'zone' (57-64 m.p.h.). I think you need a Section 172 form.
No points and no need to inform your insurers so it'd be worth checking if you're not sure. This is a national scheme so, even though you were caught in Manchester, you could do the course in Leicester.
https://www.askthe.police.uk/content/Q584.htm
http://www.drivesafe.org.uk/Speed-Aw...ackground.aspx