Is there an alternative investment simillar to Gilts/Bonds?
You can also invest in a collective investment scheme that focuses on Gilts and Bonds, like a Fund. Unlike directly held Bonds, Funds have no fixed maturity date, so returns are less certain.
Alternatively you can invest in Gilts through an Exchange traded fund (or iShare) such as the iShares FTSE UK All Stocks Gilt (IGLT). Both funds and iShares can be traded online.