Brit

You are mistaken. Last time it was checked London was 60% White. Likely to be a couple of %age points down from that now, but still majority white.

Sinn Fein do not sit in Parliament and as such fail to represent their voters their. So they would be no use as a coalition partner. The DUP will never deal with Labour because of their leadership's ties with the nationalist terror groups in Ulster. So there is no chance of a Labour led majority government. There can be a minority government. Basically runs the country without being able to introduce any major reform in any direction.

To a degree. Although they will want a far less hard Brexit than May was aiming for. UKIP are a tiny party and have no seats in this parliament. Even at their height of popularity they only ever had two MPs, both of whom were ex-Tory defectors. Their vote in this election collapsed.

There are plenty of oddball candidates in UK parliamentary elections. The 'Party Party Party' party and 'Monster Raving Loony' party are things.