[Closed] crank pedal re thread in west yorkshire

ANY decent bike shop should have the taps and bushes/ inserts.
Var do a PE-04700 Crank repair kit
"Ideal for repairing damaged threads in cranks and saving high-end cranks.
First, you have to cut new 5/8’’x24 TPI oversized threads in crank arms.
Apply some thread lock NL-77400 (page 41) to the outside of the threaded insert and then thread it into the new threading in the crank.
Finally, fit pedal spindle into the insert."

page 27

http://www.ison-distribution.com/english/product.php?part=2CY07850&PHPSESSID=musmisgjk

A helical won't last forever so you'd be best off starting to save for new cranks now.

Or ask http://www.highpath.net/