Timpson Grantham, Asda Reviews Home / Reviews / Timpson Reviews / Timpson Grantham, Asda Reviews Contact Details Asda Union St Grantham NG31 6NZ UK 01476 591110 Opening Hours Monday 09:00-18:00 Tuesday 09:00-18:00 Wednesday 09:00-18:00 Thursday 09:00-18:00 Friday 09:00-18:00 Saturday 09:00-18:00 Sunday 10:00-16:00