Could anyone recommend me ancient coin shop near by London?

Jun 2019
10
Taiwan
I'm going to London few weeks later and I'm looking for king Edward I and III groat silver coin , could anyone recommend me ancient coin shop near by London city and Kent ? Thanks.
 
Jul 2019
592
New Jersey
I remember seeing an old coin store across the street from the British Museum when I was there 2 years ago.
 
Jun 2019
10
Taiwan
Yeah, I deed search on google , but I'm not sure the
reputation of these stores , I hope someone with buying experience can share with me , then I can save the time to avoid bad dealers. Thanks.