You asked

What are the values of each component of Extra-Regio for the last 5 years?

I presume you follow :

Definition: Extra-regio territory

Regional accounts and indicators

The extra-regio territory is made up of parts of the national economic territory which cannot be attached directly to a single region that is part of the national geographic territory. It consists of:

a. the national air -space, territorial waters and the continental shelf lying in international waters over which the country enjoys exclusive rights (not relevant for the regional household accounts); b. territorial enclaves (i.e., geographic territories situated in the rest of the world and used, under international treaties of agreements between States, by general government agencies of the country (embassy, consulates, military bases, scientific bases, etc.)); c. deposits of oil, natural gas, etc. in international waters outside the continental shelf of the country, worked by units resident in the territory (not relevant for the regional household accounts).

https://www.tariffnumber.com/info/abbreviations/1182

We said

Thank you for your request.

We currently provide estimates of gross value added (GVA) by industry for sub-national areas of the UK, including for the Extra-regio category.

GVA data for Extra-regio can be found in the Regional economic activity by gross domestic product, UK: 1998 to 2018 release published on 19 December 2019.

In Table 1 we show the latest five years of GVA in current prices (in millions of pounds). Extra-regio GVA is allocated to only two industries: SIC division 06 (in Section B), which covers oil and gas extraction from the continental shelf; and SIC division 84 (in Section O), which covers embassies and armed forces posted overseas.