I ordered it, as you found it, its the wrong part you found, you found the one from controls to heater boxpeople should get up their lazy bums and use the search on lrseries:
I've put in "Series" (first dropdown box)
and "heater cable" in search:
LOOK, I"VE ****ING FOUND IT:
BTR8736 HEATER DISTRIBUTION CABLE ASSY | shop | www.lrseries.com | L. R. Series
Now do that ten times and learn to search LRSeries. Then use the part No and check the other suppliers.
BTW thanks to opening lrseries i've seen that a bearmach steering relais is only 53 quid... I thought it was an expensive part.