provided you can get confirmation that the pension scheme is approved from a UK perspective then the contributions would qualify for tax relief. Yes there would be a cap on your contributions which would qualify for tax relief depending on your total income in the tax year. Depending on the amounts involved, i'd suggest getting a tax advisor to look into your situation in more detail and they can provide tailored advice on the best approach.
Thanks Aman ! I can contribute to pension scheme through my employer. I already do that.. So, I guess it is approved from UK perspective. For an annual income of £180K, can we contribute 85K towards pension plan so that it falls under lower tax bracket? also, I have not contributes to pension scheme in previous years. So, if there is any limit on the contribution qualifying for tax relief, can I use previous year's unused allowance?