UTC is the same as GMT, also known as 'Zulu' time. British winter hours are the same time zone, British Summer time (BST) is 'Alpha' time - ie. 1 hour
ahead .
To remember which way the clocks go just remember the adage "spring forwards, fall back".
Aviation sticks mainly to UTC, so flight plan times, met forecasts etc. are all done using this and need to be converted in the summer for use with your watch (though personally I use a watch with 3 time zone displays anyway). so in the summer
subtract an hour from your watch to get to UTC - in the winter of course you are already in UTC (UK time).
nb. for SDs post - French summer time is "B" time zone, and so it goes round the world, missing a couple of letters ("Q" is one missed if I remember correctly).
