By Guy Faulconbridge, Jamie McGeever and David Milliken
LONDON (Reuters) - Sterling has tumbled to a 31-year low, but British stocks are near a record high and, contrary to many expert forecasts, the shock of Brexit has not yet pushed the British economy off a cliff.
So what gives?
Depending on which part of the financial universe you look at, the outlook for UK Plc following the June 23 vote to leave the European Union can appear equally bright or bleak.
Sterling's plunge makes Britain's exports more competitive on global markets and is therefore a boost for economic growth. But if sustained, it will fuel inflation and become a source of worry at the Bank of England.
How does the rest of the world measure Britain's standing as it prepares to divorce from the EU? Which is more telling: the steep decline in the currency's value, or the recovery in the stock markets and competitiveness?
Below is a guide to what has happened across UK markets and the economy since the Brexit vote, what lies ahead and what it means for Britain.
WHAT HAS THE IMPACT BEEN SO FAR?
- CURRENCY: Sterling <GBP=D4>, which traded as high as $1.50 on June 23, was last fetching $1.2440 <GBP=D3>.
In early Asian trade on Friday, sterling plunged about 10 percent at one point to $1.1378 from around $1.2600, though the outlying trade was later canceled and the low was revised to $1.1491 - still, the weakest level for sterling since 1985.
Sterling hit a five-year low against the euro and its lowest on a trade-weighted basis since January 2009, in the depths of the Great Financial Crisis. It is within a couple of percent of falling to its lowest since at least the 1970s on a trade-weighted basis.
Currency traders have shunned the pound on fears Britain could be heading towards a so called "hard Brexit" that will involve a turbulent negotiation with the other 27 members of the EU resulting in Britain losing its preferential access to the EU's single market while imposing immigration controls.
- SHARES: Britain's FTSE 100 index (FTSE) was up 0.4 percent at 7,030.30 points by 0712 GMT, less than 100 points away from its life-time high set in April last year. The index is up nearly 2 percent so far this week after falling in the previous week
The blue-chip index has risen 10 percent since its pre-Brexit level - and more than 15 percent from its post-Brexit low - and has come within a whisker of its historic high of 7,122.74.
The FTSE 250 (FTMC), which measures the value of smaller and more domestic-focused firms, hit a record high of 18,607 points this week and is up more than 20 percent from the post-Brexit low of June 27.
The rally in stocks has been fueled by the BoE's policy response and the slump in sterling. A weaker exchange rate boosts the earnings of companies with global operations, and around 75 percent of FTSE 100 firms' earnings are derived from abroad.
By contrast, in dollar terms - which is how non-UK investors measure their results - the FTSE 100 is still 8 percent lower than it was the day of the referendum and the FTSE 250 is down 12 percent.
- BONDS: The 10-year gilt yield (GB10YT=RR) touched 0.954 percent on Friday, its highest level since June 30 and last stood at 0.949 percent. It was 1.40 percent the day of the Brexit referendum.
But investors are now selling long-dated British government debt, worried by a rise in inflation that is expected to follow the fall in the value of the pound.
- MONETARY POLICY: The Bank of England cut rates on Aug. 4 to the lowest in its 322-year history and unleashed billions of pounds worth of extra stimulus.
PM May took the unusual step of commenting on central bank policy on Wednesday when she said near-zero rates and the BoE's huge bond-buying program had hurt savers.
WHAT LIES AHEAD?
STERLING
BoE Deputy governor Ben Broadbent said on Wednesday that the pound's decline so far had been "pretty orderly, actually". But that was before the pound plunged 6 percent in just two minutes early on Friday.
Volatility like that is bound to raise the ghosts of "sterling crisis" past, namely 1967, 1976 and 1992. Most observers say we're not there yet, but markets are nervous.
Sterling will remain extremely sensitive to statements from Prime Minister Theresa May, her ministers and European leaders on how the Brexit process unfolds.
Lawmakers from PM May's ruling Conservative Party say the fall in sterling has made Britain more competitive, but many financial market analysts say it reflects the negative view the rest of the world has of Brexit Britain.
The next major step in the Brexit process will be when May sends, by the end of March, a formal notification to the EU that Britain is preparing to leave, invoking Article 50 of the EU's Lisbon Treaty. That starts a two-year negotiating window before the United Kingdom should leave.
Still, politics could intervene: the U.S. presidential election takes place on November 8, Italy faces a referendum on Dec. 4, France holds a presidential election on April 23 and May 7 and Germany holds an election in September 2017.
Just because the pound has fallen sharply in the last three months, there's no reason it should automatically recover. Some investors have even raised the idea of parity with the dollar.
STOCKS
Central to Britain's stock market direction in the coming months is the exchange rate. As long as the pound remains weak, equity valuations will be revised higher. If you take the view that sterling will remain weak, earnings will be higher.
UK stocks are trading in a binary fashion - sterling falls, stocks rise. And vice versa. There is no sign of a "buyers' strike" hitting UK stocks or bonds right now because the BoE is happy letting the pound take the strain as it boosts exports, and helps narrow the trade and current account deficits.
The exchange rate moves also make British companies more attractive takeover targets for foreign firms, potentially fuelling a mergers and acquisition wave that would boost the value of UK shares.
But if, in the words of BoE governor Mark Carney, a country depends on "the kindness of strangers", you have to be careful about your currency. There may come a point when foreign investors take fright at sterling and stop buying UK assets.
A Reuters poll of around 30 traders, fund managers and strategists this week predicted that the FTSE 100 will lose ground over the coming year.
BANK OF ENGLAND
The Bank said in August and again in September that most of its policymakers expected to cut rates again this year if the economy looked on track to slow as it had forecast.
However, Prime Minister May's comments on the damaging side-effects of his ultra-low interest rates stunned investors.
The blunt words represented a clear change of tone from Downing Street, under its new occupant, towards the Bank of England and were among the most direct from a prime minister since the BoE won operational independence in 1997.
Carney said on Thursday he agreed "with the spirit" of May's speech in which she signaled action by the government to foster growth and said the BoE's actions had helped the economy through the aftermath of the 2007-09 financial crisis.
Stronger than expected recent data puts Carney in a tricky position.
While weakening the immediate case for a further rate cut - especially as soon as next month - it is less clear whether it will alter the BoE's longer-run expectation of a slump in business investment and a gentler slowdown in consumer spending.
COMPANIES
The current consensus is that British-based companies that earn in currencies other than the pound - such as British American Tobacco (L:BATS), GlaxoSmithKline Plc (L:GSK) - should do well as their revenues will be reported in pounds.
Those reliant on domestic revenues - such as retailers - are exposed should the British economy take a hit. While recent data has shown the economy shrugged off some the shock of the Brexit vote, the Bank of England downgraded its 2017 growth forecast to just 0.8 percent from a previous estimate of 2.3 percent. The growth outlook for 2018 was cut to 1.8 percent.
Supermarkets such as no.2 player Sainsbury's have said sterling's fall since the Brexit will not necessarily lead to higher grocery prices, as it could be offset by lower commodities prices and stiff competition. Travel companies TUI Group (L:TUIT) and Thomas Cook (L:TCG) have seen bookings from UK customers rise this summer, as Britons defied worries that the devaluation of the pound would deter people from going on holidays abroad.
The swings in the price of sterling may force some companies to hedge their currency exposure while prompting demands for pay rises from workers who earn in sterling but have dollar or euro costs.
INFLATION
Economists estimate that a sustained 10 percent fall in the pound's exchange rate adds about 0.2-0.3 percentage points to inflation over the period of a couple of years.
The Bank of England forecasts inflation will rebound to around its 2 percent target next year and then overshoot to 2.4 percent in 2018 and 2019 - the biggest medium-term overshoot it has ever forecast.
Some banks predict a bigger, but shorter-lived, spike in inflation next year as the effects of a weaker currency pass through more quickly to the rest of the economy than the BoE expects.
Retailers have given a mixed picture on how soon they will pass on price rises. Some, such as fashion retailer Next have said they plan to raise prices rather than erode margins.
But other sectors such as groceries see different competitive pressures.
While the fall in sterling should make imported food more expensive, Britain's biggest retailer, Tesco (L:TSCO), sees no let up in deflation in the UK grocery market any time soon.
A survey published by the British Retail Consortium reported a record drop in the cost of food and found little sign of price rises on the back of sterling's fall since the Brexit vote.
M&A
The shock vote to leave the EU chilled dealmaking activity involving British companies to the lowest level in at least two decades as bosses grapple with what Brexit will cost, Thomson Reuters data shows.
BRITAIN'S PLACE IN THE WORLD
The United Kingdom's gross domestic product, forecast before the June 23 vote to be worth about $2.8 trillion in 2016, or the world's fifth largest, has now slipped behind France.
Its GDP is now worth about $2.32 trillion on current exchange rates, compared with France's $2.34 trillion. Germany is the EU's largest economy, worth about $3.5 trillion, and the world's fourth largest economy after the United States, China and Japan.