Much of Andy Burnham’s campaign to win the Makerfield by-election has focused on his record as Mayor of Greater Manchester.

Burnham frequently points to a decade of economic growth above the national average in the region and achievements in areas such as public transport and education.

But with Reform breathing down his neck, there are some weaknesses in Burnham’s record he would rather avoid talking about and one in particular that could yet come back to haunt him, insiders say.

Shorts

Authorities in Greater Manchester spent more than £100m on a Clean Air Zone (CAZ), which would have charged drivers of polluting vehicles up to £60 a day but was ultimately scrapped after Burnham faced a public backlash.