My I suggest you or your friend try the ETPS Association website at
www.etpsassociation.org.uk for starters. If your friend is already a member, he'll know the following, but I'll continue for others who may be interested.
It seems that QinetiQ (MoD[PE]/DERA transmogrified) has not yet come up with any official plan to celebrate the ETPS 60th, but the Association is looking into it.
Membership enquiries to
[email protected] Hope this helps.