Registration is being handled via RegOnline at http://www.regonline.com/asplos_2012. Unfortunately, since the conference is now only a few weeks away, registration fees can only be handled in US dollars, by Visa, Mastercard, or American Express (early registration fees could also be accepted in UK pounds).

Registration for the main conference includes the welcome reception on Sunday evening, lunches on Monday and Tuesday, and the conference banquet on Tuesday evening.

Registration on Saturday or Sunday includes lunch on that day. During registration we ask you to select which workshop you wish to attend. This is so that we can assign the workshops to rooms of the correct sizes. If space permits, you are welcome to drop in on other workshops on the same day. The VEE conference will be running on Saturday and Sunday, and registration for a workshop on one of those days also permits attendance of any of the VEE technical sessions on that day.

When arranging accommodation, note that in British English a "single", "double", "queen", or "king" room has one individual bed. A "twin" room has two individual beds. A "triple" room has three individual beds. Dates are usually written with the day first, so 07/03/12 is 7th March, 2012. Check whether or not prices are inclusive of VAT (sales tax), and whether they are per-room, or per-person.

Note that, as perviously listed here, our block bookings were valid until 5th February 2012. We have kept the details below in case you want to look at the same hotels, or at those nearby.

If searching on sites such as expedia.co.uk or booking.com, the location "Trafalgar Square, London" will find the correct area. The venue is a few hundred yards from the Piccadilly Circus, Charing Cross, and Embankment tube stations—journeys to/from the venue are easiest if you stay within this local area, or a few stops from these stations on the Bakerloo, Piccadilly, or Northern lines. There is a tube map here, and more details about journey times and connections are at http://www.tfl.gov.uk/.

In addition, attendees may wish to consider budget hotel chains such as Ibis, Premier Inn, and Travelodge. These are more basic than full-service hotels, but can provide cheap accommodation at central locations. Many offer twin or triple rooms. We have no arrangement with any of these hotels, but provide links to some that are near central London tube stations with a straightforward journey to the conference venue:

• Ibis London Euston St Pancras (near Euston Station, Northern Line to Charing Cross),

• Premier Inn London Euston (near Euston Station, Northern Line to Charing Cross),

• Premier Inn London Kings Cross St Pancras (near Kings Cross Station, Piccadilly Line to Piccadilly Circus),

• Travelodge London Covent Garden (near Covent Garden Station, Piccadilly Line to Piccadilly Circus — or 1 mile walk door-to-door),

• Travelodge London Euston (near Euston Station, Northern Line to Charing Cross),

• Travelodge London Kings Cross Royal Scot (near Kings Cross Station, Piccadilly Line to Piccadilly Circus), and

• Travelodge London Marylebone (near Marylebone Station, Bakerloo Line to Piccadilly Circus).

It is also worth checking the prices for serviced apartments, particularly for longer-term stays for groups travelling together.

The hotels we held block bookings at were:

• Best Western Mornington Hotel, 3 Star. £87.50 plus VAT per night, including breakfast. Near Lancaster Gate station, take Central Line to Oxford Circus, change to Bakerloo Line to Piccadilly Circus. (See local_directions.pdf for directions.)

• Hotel Russell, 4 Star, near Russell Square station. £155 plus VAT per night, including breakfast. Near Russell Square station, Piccadilly Line to Piccadilly Circus. (See local_directions.pdf for directions.)

• Hilton Doubletree, Victoria (formerly Hesperia London Victoria), 4 Star. Superior king room, £140 plus VAT per night (1 person) or £156.80 plus VAT per night (2 people). Including breakfast. Near Victoria Station, take Circle or Distict Line to Embankment. (See local_directions.pdf for directions.)

We have a group code for a 5% discount on many fares from American Airlines. This is valid for travel to London Heathrow airport (LHR) between 29 Feb 2012 and 10 Mar 2012. The code is included in the registration confirmation e-mail. If you wish to make a travel booking before registering then please contact Tim Harris (tharris@microsoft.com).

Participants should be particularly aware and careful about visa requirements. The UK Border Agency web site (http://www.ukba.homeoffice.gov.uk/visas-immigration/) provides general information about visa requirements, and how to apply.

If you are presenting work at ASPLOS and require a letter to confirm this then please contact Tim Harris (tharris@microsoft.com).

ACM HQ does not issue formal invitation letters for visas to attend ACM sponsored conferences. The ACM can, however, issue a visa support letter. For Visa support letters, please send all requests to the Office of SIG Services supportletters@acm.org with the following information:

• Name and mailing address as it appears on your passport
• The name of the conference you wish to attend
• Your Registration Confirmation Number
• If you are the author of any papers accepted for the conference, please provide the title
• Current mailing address (however, please note that visa support letters are issued via email)