I work for a company that carries out work on English Heritage sites, we have been asked to make a chair compliant with current regulations, it has a label saying that meets 1988 regulation, does it need to be upgraded to 2010 regs and if so can you advise how this can be achieved

If the chair carries a permanent label that meets 1988 regulations, that is all it needs, all the amendments have done is to make the legislation more correct and the main requirements have not changed much.

Check out http://www.firesafe.org.uk/furniture-and-furnishings-fire-safety-regulations-19881989-and-1993/ you can see if the chair is affected by the ammendments.

http://www.fira.co.uk/publications/flammability-guides