If you didn’t know better, you wouldn’t automatically recognise the Pet Shop Boys when seeing them in civilian dress. Arriving for an interview at the record company’s offices in West London to discuss their new album, singer Neil Tennant (69) is dressed smartly, almost posh, while his colleague and keyboardist Chris Lowe (64) appears in a washed-out hoodie. “He didn’t dress up,” says Tennant with a grin about his colleague, who – unlike in photos and at concerts – is not wearing his sunglasses. The Pet Shop Boys are in the best of spirits – and it’s no wonder. After around 40 years in the bus…