Hi Terry
I have been using a Dillon 550 to load .38, .357 and .45LC for 4 years plus. I was lucky enough to pick a second hand one in very good condition and have been extremely pleased with it. The only problem is getting parts or accessories in the UK. In the end I ended up ordering various bits direct from Dillon in the US, turned out to be very straight forward with excellent service and some parts arriving within 4 days of ordering, normally about 7 to 10 days.
Admittedly most of the stuff I ordered was about 3 years ago when the pound wasn't in the toilet so prices where reasonable, bearing in mind Dillon isn't generally a budget option.
I would seriously consider buying direct as you can get exactly what you want, shipping will be reasonably expensive but not exorbitant and they will give you a quote before you have to buy.
Import duty and VAT are a bit of a minefield but things still work out cheaper than buying over here, assuming you could actually get what you want over here.
David