I did not want to claim under the remittance basis but on arising basis. I was under the impression that by claiming residency abroad under a DTA the remittance basis did not come into it and also since my UK funds are less than the personal allowance no tax would apply.
No you're not wrong ie if under the DTA any dual residence status was resolved in favour of the non-UK country then non-UK source income would not be subject to UK tax and in relation thereto the remittance basis would be irrelevant.
If your personal allowance exceeded UK source income no UK tax charge arises.
The issue is how to get to this point.
Hence my suggestion to complete the tax return et al. It may be, that despite your assumption, that any dual residence is resolved in favour of the UK. In this case your foreign income will be subject to tax on the arising basis unless remittance basis treatment has been claimed (the £30,000 charge not applying to you i assume).