By Iain Withers LONDON (Reuters) – Britain’s biggest domestic bank Lloyds has offered UK staff a minimum 2,000 pounds ($2,242) pay rise, a source with knowledge of the talks told Reuters, as lenders and employees across the sector begin annual pay talks that could see wage bills soar. Companies across Britain are weighing how much to increase staff pay as the end of the year approaches and at a time when double-digit inflation is crushing the finances of particularly lower paid workers. Lloyds has offered staff either a 2,000 pound pay rise or a 5% lift in salary – whichever is greater – up to…