From the UK, travelers may have a few options to apply for a visa to Vietnam, here below is detailed guide:
Visa on arrival - Visa at embassy comparison chart
1. Getting visa to Vietnam through Vietnamese consulate
12-14 Victoria Road,
London W8 5RD
Tel: 0207 937 1912
Fax: 0207 937 6108 or 0207 565 3853
Direction to the Embassy: The Embassy is located on Victoria Road, opposite to Kensington Garden (Hyde Park). Nearest tube station is High Street Kensington which is about five minutes walking from the Embassy. Exit the tube station, turn right, go straight for apprroximately 300 metres before you will see Victoria Road on the right side.
Visa fees and charges:
A standard 30-day, single entry visa and processing fee cost £38. The postage administration charge is £8 for return by Special Delivery. Postage charge for two or three application together is £6 per person, for four to seven is £5 per person. For eight applications up being made together, the charge is £4 per person.
A 30-day, single entry visa in the fast-track service costs £55 if collected in person and £63 if returnt by post, inclusive of Special Delivery. You can send your application by fax two working days in advance and have your visa stamped upon submitting your original passport and visa fee payment (Please note that this fax option is allowed only in the fast-track service).
Alternatively, you can apply for a short-stay visa which is valid for 15 days, single entry. The visa will be granted within one hour if you come in person. The fee is £55.
Fees and charges are per individual and applicable to both UK and Ireland and to all applicants who possess valid and separate passports. All payments for fees and charges can be combined into one single form (in cash, postal order or bank draft). Pre-paid envelopes are not accepted.
Please note if your children are also on your passports, they will be exempted. Otherwise, they will need separate visas and will be charged as such. You do not need, however, to file separate application forms for them.
Tips by DirtyQuilmes / Thorn Tree Forum – Lonely Planet
2. Getting a visa on arrival
You can also apply for a visa on arrival as it seems the cheapest and easiest way to get a visa to Vietnam from United Kingdom. The total cost is from 35 - 50 USD/person. Click here to see how it works.