The Telegraph said Theresa May was under pressure to row back on a multi-billion-pound deal to buy the new generation of US fighter jets in a row being likened to the Westland affair.The British Government is committed to buying 138 F-35 fighter aircraft from US manufacturer Lockheed Martin. The Ministry of Defence (MoD) has so far bought 48 aircraft at a cost of £9.1 billion but is now reconsidering its pledge to buy a further 90 F-35s. 

Instead, the Telegraph understands it is looking at purchasing Eurofighter jets, made by a European consortium that includes the UK. The European manufactured jets are currently about half the price of an F-35.