For the British the fight was mainly on the European continent and Island

People forget before the English subjugated and created a political Union with Scotland that Wales, island of Ireland and Scotland

Where used as attack point's to invade England it also say a lot that the English unlike the French

Did not destroy the other identities in the British isles which could have been a bad thing with the separatist movements in Britain

As for the wars with France with all the fighting happening mostly in Europe and the colonies the British didn't experience major losses

During the war even when it has troops fighting on the continent they were part of coalition armies

Or where fighting defensively due to lack of man power and not having the troops to waist unlike the Franch

Arthur Weasley the Duke Wellington defeated an army your 40,000 troops with in 40 minutes

The British like the United States are maritime powers which means they need continental allies to achieve policy objectives