Welcome back to the City AM liveblog - for all your top news, updates and analysis from the FTSE 100 and wider market.

Welcome back to the City AM liveblog - for your top news, updates and analysis from the FTSE 100 and wider market.

Welcome back to the City AM liveblog - for all your top news, updates and analysis from the FTSE 100 and wider market.

British government bonds, stocks and sterling fall

The yield on 30-year UK government bonds surged back up close to 28-year highs and the pound was down as much as 0.4 per cent against the US dollar amid political turmoil.

Shortly after 8:00 a.m. in London, the yield on the benchmark 10-year gilt traded more than 1 basis point higher at 5.114%.

Bond vigilantes also sold gilts en masse, with UK government bond yields rising due to Andy Burnham's announcement.

UK government borrowing costs jump amid political uncertainty and oil price rise that fuelled inflation worries

The markets are apparently less enthusiastic about Andy Burnham running than Labour MPs.

The pound tumbled and the cost of Government debts soared on Friday, with economists predicting the pressure will continue throughout a likely Labour leadership contest.