Brian Dennehy, Fundexpert: Fly with British Airways 'I would invest in International Consolidated Airlines Group (IAG) – British Airways in old money. This share, listed in London, should be a reasonably straightforward way to double your money in 2021. 'Why? Well, there is massive pent-up demand for holidays while IAG shares are an obvious target for investors looking for a brighter 2021 and who have a lot of cash to put into the market – be it retail investors, UK institutions, or global investors who are massively under-invested in Britain. 'The big caveat, of course, is the virus taking a new and more dangerous path – so I would apply a stop-loss. I would sell the shares if they fall 15 per cent below my buying price – £1.60. So £1.36 and I'm out. But I'm confident I'm backing a winner.'