Have been using XFE-PD for last 4 years but supply is becoming non existent down here at the sunny (not today though) seaside.

Motorists Discount and Motabitz both used to stock it but now only have a limited and non-diesel range of Millers oil products. They're both offering Comma PD oil as a substitute, citing the high cost (probably less mark up in it for them also) of the Millers oil.

Anyone else struggling to get XFE-PD?

I have found millers products difficult to get in North Kent too. Despite good advertising, their distribution seems to be lousy.

Millers XFE-PD 5w-40 Diesel Engine Motor Oil - 5 Litres [MC-5659GG/5] - £28.99 - Wilco Direct - For All Your Motoring Needs

Prices seem reasonable...

I've just run a Group Buy for Millers Diesel Sport 4 that I sourced from here

Engine oil : Fasteronline

It seems they stock what you're after

HTH

eBay is another good place for Millers products.