First letting at the JJ Mack Building

14 November 2022

Helical plc and Ashby Capital have let the sixth and seventh floors comprising 37,880 sq ft of offices at The JJ Mack Building, 33 Charterhouse Street, EC1 to Partners Group, a leading global private markets firm, for its new London office.

The JJ Mack Building was completed on 30 September and comprises 200,450 sq ft of offices with 5,511 sq ft of ground floor retail. The building is EPC A and is anticipated to receive both a BREEAM Outstanding rating and a NABERS 5* assessment for energy in use. It has been completed to a high specification incorporating market-leading technology and includes three large roof terraces with uninterrupted views over London. There are 426 cycle spaces and high quality showers and changing rooms.

Farringdon Station, which following the opening of the Elizabeth Line is one of the best connected stations in London, is just 150 yards away.

Gerald Kaye, Chief Executive of Helical plc, commented: "The letting to Partners Group shortly after completion of the building is a clear example of the bifurcation taking place in the market between the best in class office space and the rest."

Peter Ferrari, Chief Executive of Ashby Capital, said: "We are delighted to have partnered with Helical to create The JJ Mack Building. This early letting is testament to the building's quality, strong sustainability credentials and excellent location. The final opening up of the Elizabeth Line has added to its attraction by halving journey times across London."

Helical and Ashby were advised by CBRE, Knight Frank and Clifford Chance and Partners Group by JLL and HSF.


For further information, please contact:

Helical plc 020 7629 0113

Gerald Kaye (Chief Executive) / Tim Murphy (CFO)

Address: 5 Hanover Square, London W1S 1HQ           


Twitter: @helicalplc


FTI Consulting 020 3727 1000

Dido Laurimore / Richard Gotla

[email protected]