The FTSE 100 is the UK's most recognised financial index - a basket of the hundred largest companies listed on the London Stock Exchange, from household names like BP, HSBC and Rolls-Royce to global giants with deep roots in British markets. It is watched by millions of people every day, reported on every news bulletin, and used as a barometer for the health of the UK economy. For active traders, it is also one of the most liquid, technically reliable and accessible markets available - particularly for UK-based traders using spread betting, where profits are currently tax free.
Whether you want to day trade the FTSE 100 intraday using short timeframes, swing trade it over days or weeks from the daily chart, or simply understand how index trading works before you commit real capital, this guide covers everything you need to know. From what drives the FTSE 100 and how to read it technically, to the key mistakes traders make and how a structured, rules-based approach changes the results - this is the practical UK trader's guide to the Footsie.
Key Takeaways
- The FTSE 100 is one of the most liquid and technically reliable markets available to UK traders.
- It can be traded via spread betting, CFDs or ETFs - with spread betting being tax free for UK residents.
- The FTSE 100 is most active between 8am and 4:30pm UK time and reacts strongly to UK economic data and global market sentiment.
- Technical analysis works well on the FTSE 100 - key levels, trends and candlestick patterns are consistent and reliable.
- A structured trading plan and disciplined risk management are essential before trading any index.
What Is the FTSE 100?
The FTSE 100 - pronounced "Footsie" - stands for the Financial Times Stock Exchange 100 Index. It tracks the performance of the 100 largest companies listed on the London Stock Exchange by market capitalisation. The index is maintained by FTSE Russell and reviewed quarterly - companies can be promoted into or relegated from the index depending on changes in their market value. You can check the live FTSE 100 price and chart on Yahoo Finance UK at any time during market hours.
Despite being called a UK index, the FTSE 100 is heavily influenced by global factors. The majority of revenue generated by FTSE 100 companies comes from outside the UK - from the US, Asia, emerging markets and Europe. This means the index is sensitive not just to UK economic data but to global growth trends, commodity prices, the strength of the US dollar, and international geopolitical events.
This global sensitivity is one of the reasons the FTSE 100 is such an interesting instrument for traders. It responds to a wide range of catalysts - from UK inflation data and Bank of England interest rate decisions to US Federal Reserve announcements, Chinese growth figures and oil price movements. For traders who understand these dynamics, it provides regular, meaningful moves with clear technical structure.
Why UK Traders Choose the FTSE 100
It is familiar
UK traders have a natural advantage when it comes to the FTSE 100. They live in the same time zone, follow the same news, and are directly exposed to the economic environment that drives the index. Understanding why the FTSE is moving on a given day is easier when you are reading the same newspapers, watching the same economic releases and feeling the same macro conditions as the market participants driving the price.
It is highly liquid
The FTSE 100 is one of the most liquid instruments in the world during London trading hours. High liquidity means tight spreads, reliable execution and charts that respond cleanly to technical levels rather than being distorted by thin volume. For traders using spread betting or CFDs, this translates directly into lower trading costs and more predictable price action around key levels.
It suits UK trading hours
The FTSE 100 is most active between 8am and 4:30pm UK time - the official London Stock Exchange trading session. This means UK traders do not need to stay up late to catch the best moves, as they might with US indices or certain Forex pairs during the New York session. The core activity happens during a normal UK working day, making it accessible for both full-time traders and those fitting trading around other commitments.
It is technically reliable
The FTSE 100 responds consistently to technical analysis. Support and resistance levels tend to hold clearly, trends are well defined, and candlestick patterns at key levels are meaningful. This makes it a strong instrument for traders using a rules-based, technically-driven approach - the kind of analysis that works across any liquid market but produces particularly clean results on the FTSE.
Profits from spread betting are tax free
For UK residents, trading the FTSE 100 via spread betting means any profits are currently free from capital gains tax and stamp duty. This is one of the most significant advantages available to UK retail traders and makes the FTSE 100 via spread betting one of the most tax-efficient ways to trade in the UK. Always consult a qualified tax adviser for guidance specific to your circumstances.
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How to Trade the FTSE 100 - The Key Methods
Spread betting
Spread betting is the most popular method among UK retail traders for trading the FTSE 100. You bet a fixed amount per point of movement - for example, £5 per point - and profit or lose based on how far the index moves in your favour or against you. Profits from spread betting are currently tax free in the UK, and no stamp duty is payable, making it the most tax-efficient route for most UK traders. You do not own the underlying asset - you are speculating on the direction of the price movement.
CFD trading
Contracts for Difference (CFDs) work similarly to spread betting - you speculate on price movement without owning the underlying asset, using leverage to control a larger position than your margin deposit. CFD profits may be subject to capital gains tax, unlike spread betting, but CFDs offer some additional flexibility around position sizing and are available on a wider range of international platforms. For UK traders specifically, spread betting is generally the preferred route due to the tax treatment.
ETFs and tracker funds
For longer-term investors rather than active traders, FTSE 100 ETFs (Exchange Traded Funds) and index tracker funds provide exposure to the index without leverage. These are a more passive approach - you are buying into the performance of the index over time rather than actively trading its short-term movements. This approach is outside the scope of active trading but worth understanding as context for the range of ways the FTSE 100 can be accessed.
How to Read the FTSE 100 Technically
Technical analysis is the primary tool used by active FTSE 100 traders to identify setups, time entries and manage exits. The same core principles that apply to any market apply here - but the FTSE has some specific characteristics worth understanding.
Trend identification
Start with the higher timeframe - weekly and daily charts - to establish the direction of the primary trend. Is the FTSE making higher highs and higher lows? Or has it broken down into a sequence of lower highs and lower lows? The primary trend is the most important context for any intraday setup. Trading with the trend significantly improves the probability of any individual trade working out.
Moving averages - particularly the 20, 50 and 200-period - are widely watched on the FTSE 100 and tend to act as dynamic support and resistance levels. Price pulling back to the 50-period moving average in an uptrend is a commonly traded setup across all timeframes.
Key support and resistance levels
The FTSE 100 responds very clearly to round numbers and to previous highs and lows. Levels like 8,000, 8,500 and 9,000 have historically acted as significant support or resistance - partly because they are widely watched and partly because large options positions often cluster around these levels. Identifying the key levels on the daily and weekly chart before each session gives you a clear map of where the most significant reactions are likely to occur.
Previous all-time highs, multi-month highs and lows, and major consolidation zones also act as powerful reference points on the FTSE 100 chart. When price approaches these areas, the probability of a reaction - either a bounce or a breakout - increases significantly. Combining these structural levels with candlestick confirmation on a lower timeframe gives a high-probability, technically sound basis for a trade entry.
The opening range
The first 30 to 60 minutes after the 8am open is one of the most active and information-rich periods of the FTSE trading day. The opening range - the high and low established in this initial period - often acts as a reference point for the rest of the session. A break above the opening range high, on expanding volume, can signal a trend day to the upside. A break below the low can signal the opposite. Many experienced FTSE traders wait for the opening range to establish before committing to a direction for the day.
Key economic events to watch
The FTSE 100 reacts sharply to a number of recurring economic releases. UK CPI inflation data, Bank of England interest rate decisions, UK GDP figures and employment data all move the index significantly. US data - particularly Non-Farm Payrolls, Fed rate decisions and US CPI - also have a strong impact because of the FTSE's sensitivity to global risk sentiment and the US dollar. Checking Reuters Markets before each session for scheduled economic events is a simple but valuable habit for any FTSE trader.
"The FTSE 100 is one of my favourite markets to trade because it gives you so much information before you even look at an intraday chart. The daily trend, the key levels, the macro backdrop - when those three things line up clearly, the intraday setups almost select themselves. The traders who struggle with it are usually the ones trying to trade it in isolation without that wider context."
Adrian Buthee
Head of Trading, Trendsignal
Common Mistakes FTSE 100 Traders Make
Trading without a plan
The FTSE 100 moves quickly - particularly around economic data releases and at the open and close. Without a written trading plan defining your entry criteria, stop loss rules and position sizing in advance, you will find yourself making rushed decisions in real time. Those decisions almost always cost money.
Ignoring the macro context
Because the FTSE 100 is driven significantly by global factors - commodity prices, dollar strength, US market direction - ignoring the macro backdrop and trading purely on intraday technicals without that context leads to frequent confusion. A technically perfect setup in a market that is fighting a strong macro headwind will underperform. Always know what the bigger picture looks like before you focus on the shorter timeframe.
Trading into major economic events
Holding positions through major scheduled data releases - Bank of England rate decisions, UK CPI, US Non-Farm Payrolls - without understanding the risk is one of the most common and costly mistakes FTSE traders make. These events can produce sudden, sharp moves that trigger stops and reverse positions in seconds. The safest approach is to know what is on the economic calendar each day and either close positions before major releases or reduce size significantly.
Using too much leverage
The FTSE 100 can move 100 to 200 points in a single session on busy days. For a spread better with £10 per point exposure, that is £1,000 to £2,000 of movement. Without disciplined risk management and appropriate position sizing, the volatility of the FTSE 100 can be devastating to an account very quickly. Start smaller than you think you need to and increase size only as your consistency demonstrates you are ready.
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How Trendsignal Helps You Trade the FTSE 100
The FTSE 100 is one of the 38 markets covered by Trendsignal's proprietary market scanner - scanned alongside major Forex pairs, other global indices, commodities and stocks. In seconds, the scanner identifies which markets are showing potential setups that meet the criteria of a structured, rules-based approach. If the FTSE 100 is setting up cleanly, it appears on the shortlist. If it is not - if conditions are unclear or the risk is not justified - it does not.
This removes one of the most common problems FTSE traders face - the pressure to trade just because the market is open. The scanner tells you objectively whether there is a qualified setup today, rather than leaving you to convince yourself there is one because you want to be active. That objectivity - taking the emotion out of the decision about whether to trade - is one of the most valuable things any trading tool can provide.
Beyond the scanner, Trendsignal provides a complete structured education in how to trade the FTSE 100 and other indices - covering technical analysis, macro context, risk management, trading plan development and the psychological discipline needed to execute consistently. Students also benefit from personalised 1-to-1 coaching and dedicated support throughout market hours - so when the FTSE is moving and a question comes up in real time, expert help is always available.
We have been teaching UK traders how to trade the FTSE 100 and other major markets since 2003, recognised as Best Trading Education Provider 2026 at the London Trader Show Awards and winner of multiple ADVFN Awards for trading education.
Frequently Asked Questions About Trading the FTSE 100
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Intraday Live Trading Session Swing Live Trading SessionAbout Trendsignal: Trendsignal has been providing UK trading education since 2003, based at The Innovation Centre, Cranfield University Technology Park, Bedfordshire. Our trading courses cover the FTSE 100, Forex, Stocks, Commodities and other major markets, and include our proprietary market scanner covering 38 markets simultaneously, alongside full education in technical analysis, risk management, trading psychology and plan development. Recognised as Best Trading Education Provider 2026 at the London Trader Show Awards and winner of multiple ADVFN Awards for trading education.
