Someone has cut the wire & stolen the spare wheel from TDV8. Where is the cheapest place to buy a replacement space saver wheel?

You could try ebay or similar to get a replacement, then get yourself a wheel protector like many of us here have fitted to our cars. 2006 RRS SC Bonatti Grey (the 55th car/van I have owned)
2005 GSX 1400 K5

Yes have fried eBay none on there

Use a dealer or breakers yard, spare wheels on ebay have probably come from some poor owner in the same situation as yourself, buying off the thieves you would only be encouraging them to go out and steel another one  MY07 TDV6 HSE Stornaway & Ivory

Mods So Far: Side steps - Smoked Side Repeaters - OEM Style Signature LED Front Lights - LED Side Lights - LED Interior Lighting - 2012 Autobigraphy Style Front Grill & Side Vents - 2012 Rear LED Lights

Planned Mods: Paint My Brembo's - Colour Code Mirrors - Rear Interior Light Mod - GVIF

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The contact RLD for your protector, will save you a fortune when they try again to get the wheel

Don't forget the rear light screws also

Hi,
try a RRS specialist dealer they often fit larger diameter wheels to "up spec" the cars and may have either some std alloys or space savers round the back

Only £80!!

PM Dan at Duckworths, I bet he will sort you out, plus this gives you the chance to fit a proper size wheel under the arse end In Spain - 2018 F Pace - Frightened away from the Sports due to crank failures
Gone - A couple of RRS, A couple of Disco's. However thinking of another Sport.