By Huw Jones LONDON (Reuters) – The European Union’s securities watchdog has asked Britain about recent extreme moves in UK government bond yields and is monitoring for “spillovers” into the bloc, its chair Verena Ross said on Monday. UK finance minister Kwasi Kwarteng last month triggered a bond market rout with plans for unfunded tax cuts. Pension funds struggled to meet margin calls on derivatives linked to investment funds listed in EU states Ireland and Luxembourg. “We are obviously in close touch with the UK authorities to understand the market developments that are currently happening,”…