Thoroughly recommend getting the flock scanned - even if only a few. For us, it really reduces the stress as to whether ewes actually in lamb, and who might need special care/feeding.... We've found lovely chap in Devon, who also scans in Cornwall and Somerset - very reasonable and accommodating. He happily did just 7 ewes for us last year (+ offering useful feeding advice). Feel free to pm for details... SOOOOOO excited....