"Big multinationals based in your area contribute a lot excluding the corporation tax issue such as employment, taxes from wages, local purchasing etc."
campervan not if they mainly employ low-paid workers who pay very little or no tax or National Insurance. Indeed, if they are paid under the threshold, the employer pays no NI either. What's more, many low-paid workers get in-work benefits such as working tax credits and housing benefit, so that instead of receiving money from their employment, the Exchequer is shelling it out.
Add to that the money spent on infrastructure, both general and specific (e.g. the road for which the Welsh Government paid over £3m to link Amazon's Swansea warehouse with the road network) and grants (such as the £2.5m the Scottish Government gave the same company).
The UK taxpayer can actually be out of pocket by having multinationals here. Kevin Farnsworth's report, "The British Corporate Welfare State:
Public Provision for Private Businesses" is worth a read - available here speri.dept.shef.ac.uk/wp-content/uploads/2015/07/SPERI-Paper-24-The-British-Corporate-Welfare-State.pdf