Overbet the flop - most people will see this as a steal attempt.
Check the turn, and overbet the river.
Correct, they will see it as a steal attempt, but more often than not they will still fold if it's too expensive.
Not at £1 £2 Red, not from what I have seen.
People tend to "fold" to a value type bet, and call an overbet. Be it on the flop/turn or river