OK Chaps, assuming (I know, I know...) that the FMs in Cliffs of Dover are fairly true to historical data, the BF 109E and the Spitfire will be fairly evenly matched up to 16,000 ft. Above that altitude the Spitfire starts pulling ahead of the Messer in terms of speed, and at 20.000ft the Spitfire has a decided advantage.
So what this tells us is that we will have to get high and stay high to be successful in the Spitfire. We also must assume that Jerry will not fly historically, but will pretend it's 1944. So, they will not stay with the bombers, they will not engage in low level turn fights, and in short they will be the buzz killers we know them to be.
So Chaps, get altitude, then get some more. Don't give Jerry the chance to be the "Hun in the sun". In short beat them at their own sick game.
Leave the bombers to the Hurricanes, listen to your radar controller, and be back home in one piece for tea and medals.
Carry on.