Having recently bought GeorgeL's Desmond Wise's, I finally decided to get my arches rolled and used Archenemy following the advice on here.
Pablo came out and completed it today, took his time (in the cold and wet), and eased those arches back, sealed them and now just waiting for the sealant to dry before I go out in my Desmonds!
He's the Guy who covers Kent, and can do a Arch Rolling "Day" too and has use of garage premises in Gravesend if enough people want theres done too.
Cant recommend him highly enough, top man and good price too