Murrell was appointed SNP chief executive in 2001 but his criminal behaviour did not start until nine years later.
Court documents show that the spending started off at a relatively low level but began to increase in 2013 and 2014, the year of the Scottish independence referendum.
By 2016 it had risen dramatically with the purchase of more than 100 items worth tens of thousands of pounds.
Nearly 300 items were purchased in the years covering the Covid pandemic but the level of spending peaked in 2020.
This was the year Murrell bought a luxury Niesmann and Bischoff Smove 7.4e motorhome for £124,550.
The day after buying this vehicle the ex-SNP executive ordered a book titled Take the Slow Road: Inspirational Journeys Round England and Wales by Camper Van and Motorhome – one of three he bought on the subject.
In the following months he bought accessories such as awning screw-in pegs for £15.98 and wheel clamps and keys for £119.98.
2020 was also the year when the first questions were raised by activists and SNP MPs, who asked what had happened to the £600,000 in donations to the SNP that was meant to be ringfenced for independence campaigning.
The spending continued, but at a much lower rate, after these concerns were raised and in June 2021 Murrell gave the party a loan of £107,620.
Police Scotland launched the Operation Branchform investigation into the SNP’s finances the following month.
But the embezzlement only ended in October 2022 with the purchase of two plastic food containers.
Murrell resigned as SNP chief executive in March 2023.