Question

what is England's president name ?

Answer 1

There is no such thing as a president of England (see Note). The prime minister, currently Theresa May, has completely different and more limited powers than a US style president. A prime minister is the first among equals or Primus inter pares - Wikipedia). She is accountable to her cabinet, party and to parliament.

Answer 2

There is no President in England as it's a constitutional monarchy but there is prime minister in England