Your travel agent would have helped on this matter before you buy air tickets.

Bhojpure01 · Sep 21, 2010 9:33 AM

Check the following linkhttp://www.ukvisas.gov.uk/en/d... and scroll down to the section titled Passengers exempt from the DATV requirement If you have a valid visa stamped to enter US/Australia/Canada/NewZealand and a valid ticket, then you do not need the DATV.  In your case, since you are coming to Dallas, you should be fine without a DATV visa.

GajabChhaBa · Sep 21, 2010 12:30 PM

First time I saw that. I hope the ticket agents know of this exemption since many ticket tellers at the airport won't issue you London Boarding Pass if you don't have a transit visa. Make sure about these details.

Kiddo · Sep 21, 2010 2:20 PM