The original
resistor (as mentioned in the Subject: line) was one of those safety fusible
 resistors. AFAIK none of the ones that Farnell stock are. 
 Oops, I missed that part of the subject line.  It'll be fusible for a
 reason, so should be replaced with the same type.  Moreover, if it's
 gone, there's probably something else wrong too, so maybe Adrian needs a
 pair ;-) 
 
I know rather more about this than Adrian has said, so I might as well
let on. It's from a VT100 power supply board, it's in the chopper circuit.
The chopper transistor has failed short-circuit B-C and open B-E and this
took out the resistor (as far as I can tell).
Knowing how chopper circuits behave (or don't!) I agree this must be replaced
by a fusible resistor. Otherwise next time the chopper fails it might be
spectacular
-tony