3 OneWorld Alliance members are offering some nice fares between Europe and Singapore.
Qatar Airways, Finnair and Sri Lankan are all offering various business class deals for travel commencing right away through to June 2016 and availability looks great.
Note: A lot of these fares
must be booked by 30 November.
Sri Lankan is the cheapest (unsurprisingly) at $1,402 R/T but you can get the Finnair A350 for around $1,900 R/T and the Qatar A350 for around $2,100 R/T
All of these look good value to me and, with all three fares available in December, this could be a comfortable way to do a mileage or tier-point run
All fares can be found via ITA Matrix (where I found them) - just be careful not to accidentally book anything with a super long layover.