Noel Gallagher says his brother Liam Gallagher is his ''Achilles' heel'' and knows how to ''push his buttons''.

The 'Wonderwall' songwriter has been feuding with his younger sibling since August 2009 when he walked out on their band Oasis following a massive backstage bust-up.

Noel, 48, and Liam, 42, always had a tempestuous relationship throughout the entire time they were in the super-group, and the guitarist admits their readiness to argue was because of their shared family history and the fact they know each other too well.

In an interview BBC Radio 4 show 'Desert Island Discs', he said: ''When we were not slagging each other off, we were telling each other that we loved each other. Clearly there was a point when he was the greatest singer in the world and it was great. It just so happens we like to call a spade a spade. But it was very sarcastic mud-slinging. You can gain some strength from being in a band with your brother when everyone else is a stranger, but as time goes on it becomes your Achilles' heel because you know how to push each other's buttons.''

Despite the acrimonious way Oasis ended and the ongoing war of words, Noel is very proud of his former band and the effect that their songs have had on people all over the world.

The 'Lock All The Doors' songwriter admits it's an uncommon site to see fans in tears when he performs Oasis tracks with his new group Noel Gallagher's High Flying Birds.

The musician said: ''On our day we were great. People are there now at my concerts that weren't even born then and they're crying at Oasis songs. All over the world people are still massively in love with that band, and none more so than me.''

Rumours have persisted the brothers are planning to reunite but Noel has repeatedly quashed suggestions Oasis will reform.