Take cash

There is no limit on the number of arrangements you can claim under triviality but the aggregate amount claimed cannot exceed £35,000, net of the maximum tax-free lump sum commutation. 

There is no limit on the number of arrangements you can claim under the Small Pot provision, however, there is an  aggregate overall lifetime limit of £50,000.

It is the responsibility of the Trustee of the pension arrangement to calculate and deduct the income tax before making payment.

Only if these options are specifically stated in the rules of your pension arrangement. Not all pension arrangements have updated their rules to incorporate the current Triviality or Small Pot provisions and there is no obligation on the pension providers or Trustees of the pension arrangement to do so.