Surprised about that smallish GBP and RUB volume. Russia banning/permitting Bitcoin once has been a similar gameplay like PBoC acts out today. And many trade sites in europe are british limited companies.
On this pie chart they are thinner than the icing, negligible.
gbp will always be dead. what exchanges there are bank in europe which costs money and takes time to send to. may as well use kraken.
None of the GBP exchanges are integrated into the UK faster payments setup (even if they are technically UK based). If you're going to mess around with the time and cost of wires or some sepa fudge you might as well trade in USD or even EUR and gain on the liquidity. You can't trade on big spreads and low liquidity, a catch 22 that Coinfloor is trying to address (IIRC) with 0% maker fees.