By Chris Dorrell Wage growth remained stubbornly high over the past quarter, but unemployment crept up, giving the Bank of England differing signals on how its interest rate hikes are impacting the economy. Annual pay growth excluding bonuses averaged 6.0 per cent between February and April, according to figures from the Office for National Statistics (ONS), unchanged on last month and marginally below expectations. Including bonuses, however, annual wages rose 5.9 per cent. This was an acceleration on last month and higher than economists expected. The slight acceleration in wage growth was l…