of the TX range can be converted to LPG, with the diesel engine being completely replaced, by a company called Vehicle Repowering Solutions
. The cost of this goes up to around £12.5k (including VAT) depending on the model being repowered.
Petrol private hire vehicles
can be converted to use LPG, typically for under £2,000, depending on your vehicle engine. A list of UK LPG accredited converters can be found here