London stocks posted their best performance in nearly six months.

Nasdaq paid £12.48 a share for the London stock, more than its Tuesday closing price of £12.445.

The vast majority of the current and past London Underground rolling stock in mid 20th century was made by the company.

But a late rebound among London stocks helped Wall Street as well.

Most London stock bricks are more or less porous, as is the lime mortar in which they have traditionally been laid.

The table below sets out the numbering systems used for each type of London Underground stock:

London stocks closed mixed but Tokyo stocks edged higher.

Quickly obtaining another chunk of the London Stock Exchange's shares may prove difficult for any suitor.

Red stock bricks are also fairly common, but only the yellow or brown coloured bricks are usually known as London stocks.

The H Stock classification has been used twice for London Underground stock.