I am assuming you mean he was born in England
Are these the parents you mean

Marriage Dec qtr 1905
LINTOTT George Ernest
LOCK Evelyn Hannah
Godstone 2a 449
I can't see a George Percival born to this couple in 1908

LINTOTT, ERNEST RICHARD mmn LOCK
1905 Dec Quarter in GODSTONE Volume 02A Page 225
LINTOTT, MABEL ELIZABETH mmn LOCK
1907 Sept Quarter in GODSTONE Volume 02A Page 240
LINTOTT, OLIVE MARY mmn LOCK
1910 June Quarter in GODSTONE Volume 02A Page 225
1911 census indicates these were the only children before 1911 - parents ages match your posting

ADDED 3 more children born after that census but no George / Percival