The second open issue of the six-year plans offer 100 per cent capital protection, 150 per cent participation in the FTSE 100 and a maximum return of 90 per cent over six years, compared with 75 per cent previously.
The FTSE 100 protected growth plan III is a medium term note, with returns offset against capital gains tax.
The FTSE 100 guaranteed growth Plan III – deposit series is a deposit, providing FSCS protection up to £50,000 – with the scope to be held in offshore bonds.
The plans will close to new business on June 12, with the deadline for ISA transfers on May 29 unless over-subscribed.
The counterparty for both plans is AA- rated Barclays Bank.
Minimum investment is £10,000 or £7,200 for Isas and IFA commission is 3 per cent.
Chief executive Chris Taylor says: “The Blue Sky twin growth plans provide an investment proposition specifically designed to provide a genuine solution for investors at this time, through an optimised risk and return profile, notably with no market risk, that can facilitate confident investment, for even cautious investors, during this critical market period.”