You should at least compare the offerings from other banks. The one only offers 50% upside performance.
If you are not afraid of losing a bit of money, you can put 50% money in a 5y fixed ISA (4.50% p.a. interest). The other 50% to buy Aisa and European indices/fund/futures/option directly. (I would buy in pension warpper, as it give me tax break. You can also buy from stock brokers, spreadbetting companies, CFD companies.) The end return of this method is
-- stock goes up, you get 50% stock performance + 50%*4.50%*5y interest + capital
-- stock goes down, you lose some capital. But you can lose upto 11% in stock market (i.e. stock market falls by 22%) without being worse off than the product.
http://www.moneysavi...cash-isa#fiveyrWarning: depending on what product you get, the above simple replication might not be exact comparable to the bank's offering. An example is that the Asia index might be denoted in USD/HKD, European index denoted in EUR. The bank packaged product can pay you in GBP in absolute % performance. The simple replication will be affected by exchange rate.
Be wise to-day; 'tis madness to defer.