Brian,
In addition to any Porsche dealer in the UK, & Porsche itself & their Classics group in Germany who would sell any 914 applicable parts still in stock, You can also get parts from the USA Porsche dealers, but I don't know what the UK's import tax & customes would be.
Here in the USA - both Sunset Porsche in Oregon & Suncoast Porsche in Florida have online website where they sell parts at a substantial discount from most other Porsche Dealers. Other online & bricks-&-mortar retails who sell genuine Porsche parts will generally be more expensive than these dealers discounted prices, due to their mark-up after buying at a higher-than-Porsche-dealer wholesale from Porsche.
Then there are Stoddards & Aase in Ohio, Einmalig, Sierra Madre Collection, GPR & High Performance House & Parts Heaven in California, Auto Atlanta in Georgia, & probably a few others around the USA with the NOS & some new parts for 914s.
Also, Eric Shea's PMB is in Sandy Utah with many brake & mechanical parts, as well as their doing the excellent brake caliper restorations for those NLA parts.
Restoration Design in Ontario Canada (at least they're Commonwealth! ;-) sells reproduction body panels for rust & accident repairs, as well as Auto Atlanta.
Also, the USA, UK & Euro (Germany, France, Netherlands, et al) eBay is another source for occasional NOS original parts - if that's what you need.
Also, Dansk in Euro-land is making the re-issued exhas=ust parts for the 914s & other Porsches, including the SSI stainless steel heat exchanger/exhaust units, & mufflers ofr all 6 & 4 914s.
If you're looking for USA retailers to get parts & send them with a USA 914 or other car/parts which you've/will purchase to save on shipping, then just have them sent to whomever is handling the car/parts shipment in Utah for you.
Always look closely at the listing for parts as to whether they're genuine Porsche, or reproductions, or aftermarket alternatives - depending on what you want to get. Ask them if in doubt - before ordering.
I'm sure there are others whom I've missed, so others can chime in to add to the list.
Good Luck!
Cheers Mate!
Tom
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