Best PC hardware combination suggestion for £1,000

Hello there,

My workplace needs to introduce a number of Premiere Pro PC editing machines, we've used generic off the shelf options up to now (with varying levels of success) but this venture represents a significant investment and I wonder if anybody can suggest a combination of specific hardware known to be compatible that works well together.

There is a budget of £1,000 for each machine, any advice would be very welcome.

Many thanks