What is the highest break possible in snooker?

155 (One hundred and fifty-five)

155 but only when the player has to pot a colour to start as he has been foul snookered by the other player. He only scores 1 for that ball and can then pot the black for a 7 points. He can then can start on clearing the others for a further 147

162
Technically possible but highly unlikely to occur.
The first player plays a succession of misses so the 2nd gets 159 points in aways. The 2nd players misses too, gives the first player a free ball and 4 away. The first player gets a break of 155 from the 147 + free ball + black. Scores are now level so black is respotted, which he pots too resulting in 155 +7 = 162
Break = 155 +7 = 162.

Technically there's no limit. If player A keeps fouling and fouling and fouling ... before player B starts playing his break. To my opinion the highest possible break with a single foul is 162. If player A fouls on the black ball and leaves the cueball snooker when all the balls are still on the table, player B gains 7 points and the right of a free ball. He pots a coloured ball as a red one and then the black one, he gets 8 points plus the 7 of the foul = 15 points. Then he clears the table, what would give him of course 147 points plus those 15 = 162.