Travellers cheques are possible to exchange, although at a price.
Generally, you pay about 2% commission to change travellers cheques.
As a general rule, travellers cheques bring a better rate than cash.
Banks give around 10% less for cash than travellers cheques.
Or every hundred pounds worth of travellers cheques you get.
Travellers cheques can be difficult to change outside the largest towns.
Travellers cheques have a slightly better exchange rate than cash.
Travellers cheques are also accepted, usually at better rates than banks.
Note that you will not be able to pay most merchants with travellers cheques directly.
All the banks charge a small commission for changing travellers cheques.