Venue

One Birdcage Walk

One Birdcage Walk is the home of the Institution of Mechanical Engineers, offering versatile event spaces in Westminster overlooking St James's Park. Minutes from HM Treasury, the Houses of Parliament and Horse Guards Parade, the building combines original period features with modern technology. Its flexible rooms suit everything from lectures and conferences to private dinners and receptions.

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Lecture Theatre1 / 12

⌖ Westminster · SW1H 9JJ

One Birdcage Walk

Featured space

Lecture Theatre

✦ Matched space

A tiered auditorium with fixed red upholstered seating facing a raised stage. Dark wood panelling, a decorative plaster ceiling and a rear gallery create a formal, historic setting. The room is equipped with a ceiling projector, PA system and desk microphones for speakers, with air conditioning and a flipchart available. Suited to presentation-led lectures, keynote addresses and panel discussions.

Space photos

Seated210

StandingUnknown

PrivacyPrivate

Price guideHire fee from £2,585

Other spaces

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A grand Elizabethan-style library clad in warm oak with an ornate ceiling and opulent décor. Two-storey bookshelves line the space, original fireplaces punctuate the walls, and a wrought iron-clad balcony overlooks the room. Natural light floods in, and views stretch over St James's Park. Complimentary Wi-Fi and air conditioning are provided. The room works equally well for formal dinners or standing receptions.

Seated: 120
Standing: 200
Privacy: Private
Price guide: Hire fee from £3,500

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Located on the second floor, this room features Edwardian-styled antique oak panelling and an ornate plaster ceiling. A flexible space that can be arranged in various layouts, it suits board meetings, drinks receptions and seated dinners. A registration table and coat rail are available outside the room.

Seated: 48
Standing: 60
Privacy: Private
Price guide: Hire fee from £970

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A bright, versatile space on the first floor with abundant natural light. Often used as a catering or breakout area for events in the adjoining Manufacturing Room, it features historic pieces celebrating Sir Frank Whittle and his invention of the turbojet engine. Suited to boardroom meetings or as additional breakout space.

Seated: 20
Standing: 30
Privacy: Private
Price guide: Hire fee from £650

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Located on the first floor, this room offers abundant natural light and views over St James's Park. A flexible space that can be arranged in various layouts, it works well for away days and drinks receptions. It also serves as syndicate space when used alongside the Lecture Theatre. A registration table and coat rail are available outside the room.

Seated: 48
Standing: 60
Privacy: Private
Price guide: Hire fee from £870

Marble Hall & Gallery at One Birdcage Walk

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Located on the lower ground floor, this unique Venetian palazzo-styled space comprises the Marble Hall and an adjoining Gallery. The Marble Hall and Gallery serve as registration and catering areas for events held in the Lecture Theatre, and can also be hired as standalone space in the evening. Two registration desks and the main cloakroom are located just outside the Marble Hall.

Seated: 70
Standing: 200
Privacy: Private
Price guide: Hire fee from £3,000

Joseph Whitworth Room at One Birdcage Walk

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A bright and intimate space on the ground floor, ideal for small meetings and hybrid events. Located close to the Lecture Theatre, the Joseph Whitworth Room can serve as a private meeting room for larger events held elsewhere in the building, or as a green room. The room is well suited to boardroom-style arrangements.

Seated: 12
Standing: Unknown
Privacy: Private
Price guide: Hire fee from £550

George Stephenson Room at One Birdcage Walk

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A bright and spacious room along the Presidential corridor, perfect for boardroom meetings or as a VIP space within larger events. Located on the ground floor near the Lecture Theatre, the George Stephenson Room can also function as a green room or waiting area for speakers. The room features the desk that belonged to George Stephenson, the engineer known as the Father of Railways and founder of the Institution of Mechanical Engineers.

Seated: 20
Standing: 20
Privacy: Private
Price guide: Hire fee from £715

Thomas Hawksley Room at One Birdcage Walk

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A beautiful and opulent traditional space, part of the Presidential Suite. The room benefits from natural light and includes a reception area and private toilet outside. It can be hired individually or as part of the Suite, making it suitable for away days, interviews or small meetings. Complimentary Wi-Fi is available throughout.

Seated: 16
Standing: Unknown
Privacy: Private
Price guide: Hire fee from £550

Charles Parsons Room at One Birdcage Walk

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An intimate meeting room on the first floor with plenty of natural daylight. The Charles Parsons Room is ideal for smaller meetings and can accommodate boardroom-style arrangements. The space includes room for catering, making it well suited to board meetings, workshops or team training sessions.

Seated: 10
Standing: Unknown
Privacy: Private
Price guide: Hire fee from £550

Frederick Lanchester Room at One Birdcage Walk

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A bright and intimate space on the first floor, perfect for smaller meetings and hybrid events. The Frederick Lanchester Room celebrates Frederick William Lanchester, who made important contributions to the automotive and aerodynamics fields. The room works well in boardroom-style layouts.

Seated: 10
Standing: Unknown
Privacy: Private
Price guide: Hire fee from £550