Just in case anyone was looking, found this offer on eBay, seems to be the cheapest from proper resellers in the UK who have continuous stock.
£4599 with 5 year MCC backed warranty, quite a bit cheaper than Apple direct.
https://www.ebay.co.uk/itm/Apple-iM...Xeon-8-Core-1TB-SSD-32GB-RAM-Mac/292599912810https://www.ebay.co.uk/itm/Apple-iM...Xeon-8-Core-1TB-SSD-32GB-RAM-Mac/292599912810
£4599 with 5 year MCC backed warranty, quite a bit cheaper than Apple direct.
https://www.ebay.co.uk/itm/Apple-iM...Xeon-8-Core-1TB-SSD-32GB-RAM-Mac/292599912810https://www.ebay.co.uk/itm/Apple-iM...Xeon-8-Core-1TB-SSD-32GB-RAM-Mac/292599912810