« Reply #4 on: Monday 30 April 18 10:35 BST (UK) »
For what it is worth, it is said that the Spanish Barn in Torquay held prisoners from the Napoleonic wars. Don't know if any records survive.
I imagine there may well be lists of prisoners pertaining to various wars and holding points, but your query is SO generic it does make answering rather tricky.

BORCHARDT in Poland/Germany, BOSKOWITZ in Czechoslovakia, Hungary + Austria, BUSS in Baden, Germany + Switzerland, FEKETE in Hungary + Austria, GOTTHILF in Hammerstein + Berlin, GUBLER, GYSI, LABHARDT & RYCHNER in Switzerland, KONIG & KRONER in Germany, PLACZEK, WUNSCH & SILBERBERG in Poland.
Also: ROWSE in Brixham, Tenby, Hull & Ramsgate. Strongman, in Falmouth. Champion. Coke. Eame/s. Gibbons. Passmore. Pulsever. Sparkes in Brixham & Ramsgate. Toms in Cornwall. Waymoth. Wyatt.