Hi @Expiscornovus,
Thank you for your reply!
I'm sure I'm missing something obvious as fairly new to HTTP calls, but I believe I am replicating this process:

But getting the following error:
'{"odata.error":{"code":"-2147024809, System.ArgumentException","message":{"lang":"en-US","value":"The specified view is invalid."}}}
I made a 'getbytitle' request further up the chain in order to parse out the View ID so I believe it is right.
Any help would be much appreciated.
Thanks