They seem to be a long established company with a good reputation according to what comes up when you google them. I looked at a holiday on the BBC website to Sichuan with Wendy Wu - visiting Chengdu to see the pandas and it looked a bit expensive to me compared to a similar holiday that The Travel Collection do.
The W W tour was 6 nights and over �1500 - the Travel Collection (who I've been with many times) is 9 nights from �995