Aberdeen Asset Management fell 2 1/2p to 50 1/2p as it was confirmed that the Financial Services Authority has demanded undertakings from some firms embroiled in the split capital trusts scandal that they will retain enough funds to meet compensation claims. It is not known whether Aberdeen is one of them, but Exeter Investment Group, down 10p to 90p, has been banned from paying a dividend or distributing the £10m proceeds of an asset sale.