How competitive tendering improve competition & contestability
This occurs when the govt is financing the production of a good/service but doesn't want to produce the good (e.g. beds for the NHS).
If the govt uses the same firm every time, they will become a monopoly supplier and may exploit the govt by charging high prices for low quality.
Instead, govts use 'competitive tendering' - this means asking private firms to bid for the contracts to produce these goods. The govt will choose the firm that offers the best value for money.
(-): Once the private firm has won the contract, they may provide a low quality product knowing that at this stage it's difficult for the govt to switch suppliers.