Here is a partial list of recent preprints in arxiv.org by the group members:
How to get your paper listed (group members only)
The list displayed on the preprint page is the result for a search for keywords "Imperial" and "TP" in the Report-no field at arXiv.org. To have your paper included in the list, you will therefore have to make sure that these words appear in the field. It used to be possible to use simply "Imperial-TP", but arXiv.org have now changed their policy and require the report numbers to be unique. Their suggestion is
Note that you could use some other algorithm for generating unique report numbers other than a sequential list for the whole dept, e.g. "Imperial/TP/year/submitter-initals/submitter-sequence-number" or similar.
You can change the Report-no of papers you have submitted earlier at http://arXiv.org/jref.