  We present the results of radio observations from the eMERLIN telescope
combined with X-ray data from Swift for the short-duration Gamma-ray burst
(GRB) 200826A, located at a redshift of 0.71. The radio light curve shows
evidence of a sharp rise, a peak around 4-5 days post-burst, followed by a
relatively steep decline. We provide two possible interpretations based on the
time at which the light curve reached its peak. (1) If the light curve peaks
earlier, the peak is produced by the synchrotron self-absorption frequency
moving through the radio band, resulting from the forward shock propagating
into a wind medium and (2) if the light curve peaks later, the turn over in the
light curve is caused by a jet break. In the former case, we find a minimum
equipartition energy of ~3x10^47 erg and bulk Lorentz factor of ~5, while in
the latter case we estimate the jet opening angle of ~9-16 degrees. Due to the
lack of data, it is impossible to determine which is the correct
interpretation, however, due to its relative simplicity and consistency with
other multi-wavelength observations which hint at the possibility that GRB
200826A is in fact a long GRB, we prefer scenario one over scenario two.
