In the Western world, Britain has the "greatest to fear" from home grown terrorists

Read this Telegraph article and a) worry about what is to come but also ask yourself why 'In the Western world, Britain has the "greatest to fear" from home grown terrorists'? Could it be because successive UK governments failed to realise the threat from Islamic terrorism in the UK, you might care to read Melanie Phillips book Londonistan for some background and understand the decision that the last Labour government took to increase immigration so as to 'rub the Right's nose in diversity' as Andrew Teather claimed and to increase their client vote as many others have claimed?