£m
Shares in Group undertaking
Cost
As at 3 April 201516.9
Additions - share based payments3.0
Fair value movement(0.4)
At 1 April 201619.5

The investments represent shares in the following subsidiary undertakings as at 1 April 2016 and the fair value of share based compensation plans that are awarded to employees of the Company's subsidiary undertakings. All of these are wholly owned by the Company or its subsidiary undertakings, registered in England and Wales, and operate predominantly in the United Kingdom unless otherwise stated.

Subsidiary undertakingIncorporated
in
Ordinary
shares
percentage
owned %
Principal activities
Halfords Holdings (2006) LimitedGreat Britain*100Intermediate holding company

* Registered in England and Wales.

In the opinion of the Directors the value of the investments in the subsidiary undertakings is not less than the amount shown above.

The related undertakings of the Company at 1 April 2016 are as follows:

Subsidiary undertakingPrincipal activity% Ownership
of ordinary
equity shares
Halfords Holdings (2006) LimitedIntermediate holding company100
Halfords Holdings Limited*Intermediate holding company100
Halfords Finance Limited*Intermediate holding company100
Halfords Limited*Retailing of auto parts, accessories, cycles and cycle accessories100
Halfords Payment Services Limited*Dormant100
Savvy Bikes Limited*Dormant100
Halfords Investments (2010) LP**Intermediate holding partnership100
Halfords Autocentres Holdings Limited*Intermediate holding company100
Halfords Autocentres Funding Limited*Dormant100
Halfords Autocentres Limited*Car servicing100
Halfords Autocentres Acquisitions Limited*Dormant100
NW Autocentres Limited*Dormant100
Halfords Autocentres Developments Limited*Dormant100
Stop N' Steer Limited*Dormant100
Halfords Limited (ROI)*Dormant100
Halfords Vehicle Management Limited*Dormant100
Boardman Bikes Limited*Cycle design and cycle sales100
Boardman International Limited*Cycle design and cycle sales100
Other equity investments
Hamilton Internet Services Limited*eCommerce7.6

* Shares held indirectly through subsidiary undertakings

**Wholly owned indirectly through subsidiary undertakings

All subsidiary undertakings are incorporated in Great Britain and registered in England and Wales. The only subsidiaries to trade during the year were Halfords Limited, Halfords Autocentres Limited, Boardman Bikes Limited and Boardman International Limited.