I know that Reg Hull at Oxted bridge club has just purchased a NetGear N300 Model WNR2000 from Maplin. This is an end of line model so they may not have many left in stock. I don't know if he has yet tested it in a club session.
You don't need an expensive model, as the application is low throughput. It doesn't need to support the latest wireless-ac standard. Wireless-n or even wireless-g is sufficient. Probably expect to spend something in the range of 25 pounds to 40 pounds.
Difficulty with recommending a specific model is that new routers are appearing all the time. The one we use at Chislehurst, for example, is an Asus RT-N12 B1, but this is several years old so would not be obtainable now except on the second hand market.
John