Hi Astralking, SWIM had the same problem with this and there are a few threads on the nexus about this topic, but some are quite hard to find at first! SWIM ended up buying 3 different types because of conflicting reports! In the end SWIMs conclusions were that there seems to be 2 popluar choices that were readily available:
1. B&Q Bartoline Premium Low Odour White Spirit. This is a "heavy" naptha, so apparently good at pulling spice, but does not freeze precip or evaporate easily. It is cheap though at about £5 for 2 litres.
2. Ronsonol lighter fluid. This is a "light" naptha and therefore the closest thing readily available to the quoted VM&P Naptha. It is easily evap'd and freeze preps well, but it is more expensive and can only be bought in 133ml cans (post if anyone knows different!) Cheapest place SWIM found was Tesco at £1.10
Neither of these is identical to VM&P, SWIM heard you can get closer to it (or even the same) with some artists brush cleaning fluid, but they are too pricey to consider, unless you can afford it or really want to.
SWIM tried both on small batches to see for himself and these descriptions seemed correct. Both seemed to leave a very slight trace of residue on evap'd, (the Ronsonol was less) but nothing SWIM was concerned about.
I am sure you may find out more accurate info from others, there is plenty of discussion on it here. There are plenty more brands available, but I thought this may help.
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