@Aran Billen, Thanks for posting in Q&A.
From your description, I know you want to prevent users opening safari on iPad.
Based on my researching, we can create a Device restrictions policy to block opening Safari.
Here are some steps you can refer.
1.Go to Intune portal > Click Devices > Click iOS/iPadOS > Click Configuration profiles > Click Create New policy > Select Templates as Profile type and then select Device restrictions.
2.In the Configuration settings page, click Built-in apps > Select Block Safari.
3.In Assignment page, assign it to user group.
Then all iPads will block users opening Safari.
Hope it will help.
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