You need to go back to whoever controls the budget and ask them if they really value their IT security at zero pounds.
(Not that MSE isn't good, it's just that for a business, your IT security should be taken a little more seriously.)
The budget is fine, whats the point of wasting money on salesmen that go around the UK with a few samples and powerpoint presentations haha. Bare in mind, they have no admin access, no network access, no access to sensitive or important files and the user policies and services are minimal to prevent issues.