Is that directly under the throttle, kev? - or attached to the cable somewhere?

All the Mig's I've taken apart, I've never come across this 

Kickdown switch
32 The kickdown switch is an integral part of
the accelerator cable and cannot be renewed
separately. Refer to Chapter 4A for details of
accelerator cable removal and refitting.

1 Working in the engine compartment, unclip
the inner cable retaining clip then slide the clip
out of the end fitting and release the cable
from the throttle cam (see illustration).
2 Free the accelerator outer cable from its
mounting bracket, taking care not to lose the
adjusting clip (see illustration). Work back
along the length of the cable, free it from any
retaining clips or ties, noting its correct
routing. On models with automatic
transmission it will be necessary to
disconnect the wiring from the kickdown
switch which is built into the cable.

Refitting
8 Feed the cable into position from the
engine compartment and seat the outer cable
grommet in the bulkhead.
9 From inside the vehicle, clip the inner cable
end fitting into position in the pedal end and
check to make sure the grommet is correctly
located in the bulkhead. Check that the cable
is securely retained, then refit the
heater/ventilation duct and undercover to the
facia.
10 From within the engine compartment,
ensure the outer cable is correctly seated in
the bulkhead, then work along the cable,
securing it in position with the retaining clips
and ties, and ensuring that the cable is
correctly routed. On models with automatic
transmission, reconnect the kickdown switch
wiring connector making sure the wiring is
correctly routed

Entwood wrote on 10. Feb 2010 at 16:02:


Cheeky sod.... I'm just not going to be home for several days 
Seriously though Nige - thanks a million mate