You need to give Thomson a call to find out, but it very much depends how you booked your holiday.

If you booked your holiday via a travel agent- then the answer is no- as Portland is a direct sell company and you cannot book a Portland hol via travel agent.

If you booked your holiday via the Thomson website or Thomson Call Centre- possibly. Portand Direct are located in the same call centre in Glasgow and you may be able to switch your booking...