We present an 850-{mu}m mosaic map and extracted catalogue of submillimetre sources in the extended North Ecliptic Pole (NEP) region over about 2deg^2^. The 850-{mu}m map is constructed using newly obtained observations by SCUBA-2 at the East Asian Observatory's James Clerk Maxwell Telescope, carried out using the observatory's large programme opportunities. The recent 850-{mu}m survey has extended the submillimetre data coverage by almost a factor of 4 compared to previous surveys, with a depth of {sigma}rms=1.0-2.3mJy/beam. The catalogue contains 549 sources selected above a significance level of 4{sigma}, where the false-detection rate is 10 per cent; a higher threshold of 4.5{sigma} is required in order to achieve a false-detection rate below 3 per cent, which results in 342 sources being selected. Despite the large spatial variation of the noise, the deboosted flux density of sources is comparable to results from the SCUBA-2 Cosmology Legacy Survey, which covered the central 0.6deg^2^ of our survey area with better sensitivity. We construct the source counts at 850{mu}m, finding results in agreement with other 850-{mu}m surveys in cosmological blank fields over S_850_=4-15mJy. We find a slight excess of bright galaxies (S_850_>15mJy), which can be considered to be at z_phot_=2-4. The 850-{mu}m data add valuable long-wavelength information to mid-infrared-selected sources from the AKARI NEP-deep and NEP-wide surveys, which will be helpful in preparing for future near-infrared to millimetre wavelength observations in the NEP region. Our 850-{mu}m mosaic map and source catalogue will be made publicly available.

Cone search capability for table J/MNRAS/498/5065/table2 (850-{mu}m source catalogue from the NEPSC2 survey covering approximately 2deg^2^)