The document discusses various investment opportunities for pension schemes arising from market conditions following the 2008 credit crunch, including gilt repurchase agreements (repo), gilt total return swaps, and collateral upgrade trades. It provides details on how gilt repo and total return swaps work, comparing them on factors like liquidity, maturity, transparency, and documentation. It also explains what a collateral upgrade trade entails, where a pension scheme loans gilts to a bank in return for less liquid collateral and a fee.