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We combine Herschel/SPIRE sub-millimeter (submm) observations with existingmulti-wavelength data to investigate the characteristics of low redshift,optically red galaxies detected in submm bands. We select a sample of galaxiesin the redshift range 0.01$\leq$z$\leq$0.2, having >5$\sigma$ detections in theSPIRE 250 micron submm waveband. Sources are then divided into two sub-samplesof $red$ and $blue$ galaxies, based on their UV-optical colours. Galaxies inthe $red$ sample account for $\approx$4.2 per cent of the total number ofsources with stellar masses M$_{*}\gtrsim$10$^{10}$ Solar-mass. Followingvisual classification of the $red$ galaxies, we find that $\gtrsim$30 per centof them are early-type galaxies and $\gtrsim$40 per cent are spirals. Thecolour of the $red$-spiral galaxies could be the result of their highlyinclined orientation and/or a strong contribution of the old stellarpopulation.  It is found that irrespective of their morphological types, $red$ and $blue$sources occupy environments with more or less similar densities (i.e., the$\Sigma_5$ parameter). From the analysis of the spectral energy distributions(SEDs) of galaxies in our samples based on MAGPHYS, we find that galaxies inthe $red$ sample (of any morphological type) have dust masses similar to thosein the $blue$ sample (i.e. normal spiral/star-forming systems). However, incomparison to the $red$-spirals and in particular $blue$ systems,$red$-ellipticals have lower mean dust-to-stellar mass ratios. Besides galaxiesin the $red$-elliptical sample have much lower meanstar-formation/specific-star-formation rates in contrast to their counterpartsin the $blue$ sample. Our results support a scenario where dust in early-typesystems is likely to be of an external origin.

H-ATLAS/GAMA: The nature and characteristics of optically red galaxies detected at submillimetre wavelengths