Holidays/Travel for singles 25 yrs good company

My daughter and possibly my sons are looking to find a travel company who cater for people around their age who organise trips abroad.They all have busy social lives, but they want to travel for holidays and weekends.
It seems that their friends have different holiday breaks.

If you know of anything that might suit I would appreciate your suggestions.

Do you mean

hi,
a great travel company for overland trips is kumuka- i have travelled alot and met many singletons/ groups travelling on overland tours with kumuka - heard really good reports!...hope this helps.....

I travelled alone with Exodus before to East Africa - they organise group holidays, often to exotic and adventurous places and the good thing is that they are mostly young people and often people travel alone. Another company would be Explore. They both have good websites.

Many thanks for your help
[broken link removed] seems to be just what she was looking for and seems to find it very interesting.
Roger