Only if the other party is willing to accept them, which they are under no obligation to do. Nor, for that matter, are they obliged to accept Bank of England bank notes, or any other form of payment you may offer. Even in payment of a debt, there is no obligation on the person due the debt actually to accept payment in the exact amount of legal tender. All that happens is that, if such payment is refused, the refusal is classed as unreasonable and no action can be taken for non-payment of the debt.
Colin Bignell