On Sat, 4 Dec 2004, William Maddox wrote:
By far the best stuff I've ever used is
"Goo-Gone", a citrus-solvent/
petroleum-solvent blend. Perhaps it (or an equivalent) is sold in the
UK. I've also used Goo-Gone for cleaning ink from plastic surfaces.
It is a bit harsher than isopropanol, but take off some marks that
isopropanol will not, and doesn't visibly affect opaque plastics (or
most transparent ones for that matter).
TIP: Apply it to the cloth, not the item being cleaned ;)
I've always found it more effective to put on the item being cleaned and
let it soak under the label. I've never seen it harm plastic so letting it
sit on the plastic shouldn't do any harm.