The Red Roses are on course for a consecutive Grand Slam after defeating Ireland 27-0 in Doncaster.
Tries from Sarah Hunter, Abby Dow, Jess Breach, Vicky Fleetwood and Sarah McKenna sealed victory for Simon Middleton’s side.
A home fixture against Wales at Twickenham Stoop and an away match versus Italy now stand in the way of England retaining their title.
They followed up impressive victories over France and Scotland with a five-try win over Ireland who themselves had been unbeaten in the tournament going into Sunday’s fixture.
It was a 19th consecutive win on home soil for Middleton’s side, with the victory coming in front of 5,000 fans at a sold out Castle Park in Doncaster.
The rout started as early as the third minute, captain Hunter going over off the back of a scrum before a significant break in play due to an injury to Irish forward Lindsay Peat.
The Red Roses were soon over again once the game restarted as Dow crossed in the corner, her fourth try in three games, with the ball being recycled by England’s three quarters out to the right wing.
A third try came in trademark fashion, Fleetwood dotting down off the back of a driving maul and the bonus-point was sealed before half time, with Breach over on the left wing to cross for a 22nd Test try for her country as England led 22-0 at the break.
Dow had a second disallowed for an earlier forward pass but soon after England were over as McKenna darted through on the hour.
Detysha Harper came on for her Red Roses debut, but to their credit Ireland’s defence was resolute in a tight second half, which saw just one try.
Head coach Simon Middleton said: “It was a really tough game. Both sides defended fantastically well.
“I was really pleased with the way we defended and at the same time Ireland defended well too and were so tough to get the ball from. They’re becoming very difficult to beat.
“In the first half I thought we were terrific and played some great rugby, we attacked well and in different ways and gave ourselves a good platform to kick on from.
“We didn’t execute our attacking game plan in the second half which is disappointing.
“That said, it’s a great win for us and we’re pleased.”
15. Sarah McKenna, 14. Abby Dow, 13. Emily Scarratt (VC), 12. Amber Reed, 11. Jess Breach, 10. Katy Daly-McLean, 9. Leanne Riley; 1. Vickii Cornborough, 2. Lark Davies, 3. Sarah Bern, 4. Poppy Cleall, 5. Zoe Aldcroft, 6. Sarah Beckett, 7. Vicky Fleetwood, 8. Sarah Hunter (C)
16. Amy Cokayne, 17. Detysha Harper, 18. Shaunagh Brown, 19. Harriet Millar-Mills, 20. Amelia Harper, 21. Natasha Hunt, 22. Zoe Harrison, 23. Emily Scott.
15. Eimear Considine, 14. Lauren Delany, 13. Sene Naoupu, 12. Katie Fitzhenry, 11. Aoife Doyle, 10. Claire Keohane, 9. Kathryn Dane; 1. Lindsay Peat, 2. Cliodhna Moloney, 3. Linda Djougang, 4. Aoife McDermott, 5. Judy Bobbett, 6. Ciara Griffin (C), 7. Edel McMahon, 8. Anna Caplice.
16. Victoria Dabanovich O’Mahony, 17. Laura Feely. 18. Leah Lyons, 19. Ciara Cooney, 20. Dorothy Wall, 21. Nicole Cronin, 22. Larissa Muldoon, 23. Hannah Tyrrell.
Round one: France Women 13-19 Red Roses
Round two: Scotland Women 0-53 Red Roses
Round three: Red Roses 27-0 Ireland Women
Round four: Saturday 7 March – Red Roses v Wales Women – buy tickets here.
Twickenham Stoop, London (KO 1205 GMT, Sky Sports Action and Mix, Sky Sports YouTube)
Round five: Sunday 15 March – Italy Women v Red Roses
Stadio Plebiscito, Padova (KO 1330 GMT, Sky Sports Action and Mix, Sky Sports YouTube)
Courtesy of the RFU