Since you clearly do not have a shares account with a broker there in the U.K. FTT's advice of working with your own bank (if they provide this service) or even with Barclays directly to liquidate the shares is probably the best avenue to pursue. Just be sure to explain to them your concerns about a prompt transaction so as to avoid a decline in value and make sure you are comfortable with their answer. If it requires them sending the shares off to a transfer agent or registrar somewhere be sure you get their promise of the settlement amount in writing before you turn over your shares. Oral promises will be denied when the stock drops 2 weeks later and your shares have still not been settled.
Happy Trading
