Did Gladstone Have a State Funeral?

Gladstone's body lay in state in Westminster Hall and the funeral was at the very nearby Westminster Abbey on the 28th, the last day of the lying-in-state. Wikipedia says "His coffin was transported on the London Underground before his state funeral at Westminster Abbey".

Which commoners had state funerals?

Sir Winston Churchill's funeral in 1965 was the most recent state funeral. Other "commoners" to have been honoured in this way include the Duke of Wellington (1852) - a former prime minister who was victorious in the battle of Waterloo - and Lord Nelson (1806), after his death in the battle of Trafalgar.

When did Gladstone resign?

Gladstone became Prime Minister for the last time at the age of 82, and was both the oldest ever person to be appointed to the office and when he resigned in 1894 aged 84 he was the oldest person ever to occupy the Premiership.