British passport holders do not require a visa to visit Dominica for stays up to 3 months. If you wish to stay longer, you can apply and pay for an extension through the Dominica Immigration Department. Your passport should be valid for the duration of your intended stay.
You will have to pay a departure tax. This is sometimes included in the far of your airline, however you should check with your airline to confirm this.
The information found here is based on the response provided by the Dominican embassy. We recommend you always double check the latest information directly with the embassy before you travel. If you wish to travel for longer than the visa-free period, you should speak to the Dominican embassy directly on 0207 370 5194.