travel to dublin

[jaffa cake]

Do i need a passport to travel to dublin from england

[dzug]

Only if you travel with Ryanair.

Other airlines are happy with photoid of some sort - you'd need to check what with them

The Irish government doesn't require a passport.

[Buenchico]

As Dzug indicates, British & Irish citizens don't require a passport to travel between the UK and Ireland (and, of course, vice versa).

All airlines, except Ryanair, currently accept a photo-style driving licence as proof of identity (for security purposes). Some will accept other forms of photographic ID.

To travel with Ryanair you'll need a passport or, if you live or work in the northwest of England, a UK National ID card (£30):
http://idsmart.direct.gov.uk/index.html

Chris