You can:
1. Get a one-way ticket for London - Frankfurt / Munich at 12,500 KF Miles / Person. It might not be operated by SQ, but by other Star Alliance member.

Not a very good rate IMHO
2. Transfer KF Miles to Shangrilla GC (12 KF to 1 GC Award POints, IMHO very bad conversion rate)
3. You can use your points to book hotel at Krisflyervroom (You might need to mix Cash and KF Miles, don't think 10,000 Miles i enough for most Hotels in Europe)