Hey Aaron, I just replied to your email.
What do you need to do to the car. I am in the states and also do more work on the 67-69 types, but if you have any questions let any of us know. If this is a driver, just fix things as they need fixing and add other things on when you have the time and money.
As far as rebuilding the car. I would do suspension and brakes first. Most of the suspension you can rebuild yourself without many special tools. I would look at Hotchkis performance at www.hotchkisperformance.com
or Summit at www.summitracing.com
if you want to go high-perf. If you want original parts look for Year One or Classic Industries.
If the suspension is already in decent shape, how are the brakes? If they are drums, you might want to look into a disk conversion. To do this on a budget look for a kit from Stainless Steel Brakes. (sorry, I don't know their website)
Once you have suspension and brakes solid, then go to work on the drivetrain (engine, transmission and rear differential). If you are planning on swapping in that big block, you might need to strengthen the trans and rear so they can handle all of the new found power.
After you have it in driving condition then I would start the body. Unless of course the body is rusted in which case start as soon as you can before it gets worse. Interior can be done whenever, but in my opinion can wait until later.
If buying from American companies is difficult due to the Pound/Dollar exchange issue, you can try to set up a credit card account along with a checking account (to pay off the credit card) here in the states so that you can order your parts over the phone with less hassle.
Hope this helps.