If the benefits are under Defined Benefit schemes, then NO.
The 25% lump sum and ARF option are only available under Defined Contribution schemes.
In your case your lump sum (commutation of part of the DB pension) is based on your years of service and salary in each scheme. If they are 3 separate schemes, then you will have to find out from each scheme what the exact make up of benefits will be:
- how much as a lump sum, and
- what the residual pension will be.
You might investigate whether any of the schemes will offer a Transfer Value (in lieu of the guaranteed pension ), in which case you might be able to effectively convert the DB into D.C. (but whether this is a good idea or not is something which might require detailed examination).