most specialist e-bike retailers need to make £400+ on a bike to keep their head above water. To run a shop with typically 4 staff members, you need to clear £150k net a year. From £1,000, you take out the VAT, (£166.33), at 25% margin, you would have to sell 720 Gtechs a year to stay in business. It's a noticeable percentage of the UK market for e-bikes, about 25,000 to 35,000 e-bikes a year. That's why bikes under £1000 can only be retailed by large surfaces or mail order.
Personally, I can't see Gtech continue to make e-bikes. One reason: too small turnover for them and secondly, the Gtech fits a tiny percentage of the market, most e-bike customers are 60+, they need more assistance and comfort.