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Blue Large Amplitude Pulsators (BLAPs) are a relatively new class of bluevariable stars showing periodic variations in their light curves with periodsshorter than a few tens of mins and amplitudes of more than ten percent. Wereport nine blue variable stars identified in the OmegaWhite survey conductedusing ESO's VST, which show a periodic modulation in the range 7-37 min and anamplitude in the range 0.11-0.28 mag. We have obtained a series of followupphotometric and spectroscopic observations made primarily using SALT andtelescopes at SAAO. We find four stars which we identify as BLAPs, one of whichwas previously known. One star, OW J0820--3301, appears to be a member of theV361 Hya class of pulsating stars and is spatially close to an extended nebula.One further star, OW J1819--2729, has characteristics similar to the sdAVpulsators. In contrast, OW J0815--3421 is a binary star containing an sdB and awhite dwarf with an orbital period of 73.7 min, making it only one of six whitedwarf-sdB binaries with an orbital period shorter than 80 min. Finally, highcadence photometry of four of the candidate BLAPs show features which wecompare with notch-like features seen in the much longer period Cepheidpulsators.

The OmegaWhite Survey for Short-Period Variable Stars VII: High amplitude, short period blue variables