IBM in North Harbour


IBM United Kingdom Limited
PO Box 41
North Harbour
PO6 3AU (mail)
PO6 3EN (directions)
Telephone: 023 9256 1000023 9256 1000
Fax 023 9238 8914023 9238 8914


If you are using SatNav, use the Lakeside North Harbour estate Postcode, PO6 3EN, to get to IBM North Harbour.

From the North and the West via M3/M27

From M3, follow signs to M27 eastbound, sign posted Portsmouth/Fareham/Airport. Leave the M27 at junction 12, sign posted Cosham. At the traffic lights take the right hand lane to turn right into Western Road, carry on down the dual-carriageway into an elongated roundabout. Keep right and enter the Lakeside North Harbour estate from this roundabout.

Coming via the A32, join the M27 eastbound to Portsmouth at junction 10 just north of Fareham, then follow directions as above.

From the North and East via A3M/A27

These routes meet at the interchange to the south west of Havant. Follow the Portsmouth signs, ignoring the Southsea exit, but do not join the M27 or M275. Leave the A27 at exit sign posted 'Cosham and non-motorway traffic' keeping to the right-hand lane of slip road. Get into middle lane at roundabout and take the second exit. You will need to move over to left lane as you pull onto roundabout. The entrance to the Lakeside North Harbour estate is first on the left at the next roundabout.

Car Parking

Parking at the Lakeside North Harbour estate is available for IBM employees and visitors.

Follow the entrance road past the retail outlets; the road then turns right after which take the left-hand lane and follow the road to the left (after the green cooling towers).

Please park in Bays D1 to E7 (shared spaces with other Tenants) or Bays E8 to E11 (exclusively for IBM use).


Intercity trains run from London Waterloo to Havant and Portsmouth and Southsea, both about five miles from the Portsmouth location. On arrival at these stations it is probably easiest to take a taxi to the location. The nearest local railway station to IBM's location is Cosham.

It is possible to catch a shuttle bus from the Cosham Bus Terminus (approximately five minutes walk from the station). From the main station exit, turn left across the railway lines where you will come to a small bus station on your right. The shuttle bus timetable can be downloaded here (PDF, 200KB).


There are taxi ranks at the railway stations. Alternatively call Coastline (Cosham) on 023 9237 7777023 9237 7777 or Aquacars on 023 9281 8123023 9281 8123.