Unfortunately, moving abroad is not sufficient reason to get out of the contracts.
For practical purposes, the lenders might not want to follow you or take proceedings in Dubai but if ever come back, they could decide to pursue you for the balance outstanding. There is an arrangement whereby they could get a judgement in the UK court which they would get in default if you did not defend any action they brought and they could then enforce that debt in Dubai.
The best thing you can do therefore is explain the circumstances and ask them to come to a financial arrangement whereby you pay them a partial lump sum and walk away. If they don’t do that, and you simply walk away, you potentially face the legal proceedings I mentioned in the first paragraph.
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