UK pub bosses have said they are “excited” at the prospect of welcoming customers through their doors again as preparations ratchet up to safely serve customers from the start of next month.Greene King said it is introducing a new “safe socialising” layout to its 1,700 pubs in preparation for July 4, which ministers have said is the earliest that pubs will be able to reopen.The pub giant said it has invested £15 million into pub safety, including protective measures for staff and customers such as Perspex screens and visors.Tables will be spaced out in line with any Government guidelines and customers will be encouraged to pre-book a table rather than stand at the bar, it said.Greene King chief executive officer Nick Mackenzie said: “We.