One of the first high-profile legal claims under new age discrimination laws is due to be heard at an employment tribunal in London this morning .

The case is being brought by Peter Bloxham, a former insolvency partner at Freshfields Bruckhaus Deringer, one of the biggest City law firms. Mr Bloxham's claim is believed to focus on alleged unfairness stemming from changes to the firm's pension arrangements, although details have not been disclosed publicly.